SCIENCE AND TEC-
2022
1. Consider the
following
(1) Aarogya Setu
(2) CoWIN
(3) Digi Locker
(4) DIKSHA
Which of the above are built on top of open-source digital platforms?
(a) 1 and 2 only
(b) 2, 3 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4
2. With reference to
Web 3-0, consider the following statements :
1. Web 3-0 technology enables people to control their own data.
2. In Web 3-0 world, there can be blockchain based social networks.
3. Web 3-0 is operated by users collectively rather than a corporation.
Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
3. With reference to
“Software as a Service (SaaS)”, consider the following statements:
(1) SaaS buyers can customize the user interface and can change data fields.
(2) SaaS users can access their data through their mobile devices.
(3) Outlook, Hotmail and Yahoo! Mail are forms of SaaS.
Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
4. Which one of the
following statements best reflects the idea behind the “Fractional Orbital
Bombardment System” often talked about in media ?
(a) A hypersonic missile is launched into space to counter the asteroid
approaching the Earth and explode it in space.
(b) A spacecraft lands on another planet, after making several orbital motions.
(c) A missile is put into a stable orbit around the Earth and deorbits over a
target on the Earth.
(d) A spacecraft moves along a comet with the same speed and places a probe on
its surface.
5. Which one of the
following-is the context in which the term “qubit” is mentioned ?
(a) Cloud Services
(b) Quantum Computing
(c) Visible Light Communication Technologies
(d) Wireless Communication Technologies
6. Consider the
following communication technologies:
(1) Closed-circuit Television
(2) Radio Frequency Identification
(3) Wireless Local Area Network
Which of the above are considered Short-Range devices/technologies?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
7. Consider the
following statements :
1. Biofilms can form on medical implants within human tissues.
2. Biofilms can form on food and food processing surfaces.
3. Biofilms can exhibit antibiotic resistance.
Which of the statements given above are correct ?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
8. Consider the
following statements in respect of probiotics
1. Probiotics are made of both bacteria and yeast.
2. The organisms in probiotics are found in foods we ingest but they do not
naturally occur in our gut.
3. Probiotics help in the digestion of milk sugars.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) 1 and 3
(d) 2 and 3
9. In the context of
vaccines manufactured to prevent COVID-19 pandemic, consider the following
statements :
1. The Serum Institute of India produced COVID-19 vaccine named Covishield
using mRNA platform.
2. Sputnik V vaccine is manufactured using vector based platform.
3 COVAXIN is an inactivated pathogen based vaccine.
Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
10. If a major solar
storm (solar-flare) reaches the Earth, which of the following are the possible
effects on the Earth ?.
1. GPS and navigation systems could fail.
2. Tsunamis could occur at equatorial regions.
3. Power grids could be damaged.
4. Intense auroras could occur over much of the Earth.
5. Forest fires could take place over much of the planet.
6. Orbits of the satellites could be disturbed.
7. Shortwave radio communication of the aircraft flying over polar regions
could be interrupted.
Select the correct answer using the code given below:
(a) 1, 2, 4 and 5 only
(b) 2, 3, 5, 6 and 7 only
(c) 1, 3, 4, 6 and 7 only
(d) 1, 2, 3,4, 5, 6 and 7
11. With reference to
Non-Fungible Tokens (NFTs), consider the following statements.
1. They enable the digital representation of physical assets.
2. They are unique cryptographic tokens that exist on a blockchain.
3. They can be traded or exchanged at equivalency and therefore can be used as
a medium of commercial transactions.
Which of the statements given above are correct?
(a) land 2 only
(b) 2 and 3 only
(c) 1 and 3 only.
(d) 1, 2 and 3
12. Which one of the
following statements best describes the role of B cells and T cells in the
human body ?
(a) They protect the body from environmental allergens.
(b) They alleviate the body’s pain and inflammation.
(c) They act as immunosuppressants in the body.
(d) They protect the body from the diseases caused by pathogens.
13. Consider the
following statements : DNA Barcoding can be a tool to :
1. assess the age of a plant or animal.
2. distinguish among species that look alike.
3. identify undesirable animal or plant materials in processed foods.
Which of the statements given above is/are correct?
(a) 1 only
(b) 3 only
(c) 1 and 2
(d) 2 and 3
2021
1. Water can dissolve more substances than any other
liquid because
(a) it is dipolar in nature
(b) it is a good
conductor of heat
(c) it has high value
of specific heat
(d) it is an oxide of
hydrogen
2. With reference to street lighting, how do sodium
lamps differ from LED lamps?
1. Sodium lamps produce light in 360 degrees but
it is not so in the case of LED lamps.
2. As street-lights, sodium lamps have longer
life span than LED lamps.
3. The spectrum of visible light from sodium
lamps is almost monochromatic while LED lamps offer significant colour
advantages in street lighting.
Select the correct answer using the
code given below
(a) 3 only
(b) 2 only
(c) 1 and 3
(d) 1, 2 and 3
3. The term ‘ACE2’ is talked about in the context of
(a) genes introduced
in the genetically modified plants
(b) development of
India’s own satellite navigation system
(c) radio collar for
wildlife tracking
(d) spread of viral diseases
4. Bisphenol A (BPA) , a cause of concern, is a
structural/key component in the manufacture of which of the following kinds of
plastics?
(a) Low density
polyethylene
(b) Polycarbonate
(c) Polyethylene
terephthalate
(d) Polyvinyl chloride
5. Triclosan considered harmful when exposed to high
levels for a long time, is most likely present in which of the following?
(a) Food preservatives
(b) Fruit-ripening
substances
(c) Reused plastic
containers
(d) Toiletries
6. Which one of the following is a reason why
astronomical distances are measured in light-years?
(a) Distances among
stellar bodies do not change.
(b) Gravity of stellar
bodies does not change.
(c) Light always
travels in a straight line.
(d) Speed of light is always same.
7. With reference to recent developments regarding
‘Recombinant Vector Vaccines’, consider the following statements:
1. Genetic engineering is applied in the development
of these vaccines.
2. Bacteria and viruses are used as vectors.
Which of the statements given above
is/are correct?
(a) 1 Only
(b) 2 Only
(c) Both 1 and 2
(d) Neither 1 nor 2
8. In the context of hereditary diseases, consider
the following statements:
1. Passing on mitochondrial diseases from parent
to child can be prevented by mitochondrial replacement therapy either before or
after in vitro fertilization of egg.
2. A child inherits mitochondrial diseases
entirely from mother and not from father.
Which of the statements given above
is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
9. Bollgard I and Bollgard II technologies are
mentioned in the context of
(a) clonal propagation
of crop plants.
(b) developing genetically modified
crop plants.
(c) production of
plant growth substances.
(d) production of
biofertilizers.
10. In a pressure cooker, the temperature at which
the food is cooked depends mainly upon which of the following?
1. Area of the hole in the lid.
2. Temperature of the flame
3. Weight of the lid
Select the correct answer using the
code given below.
(a) 1 and 2 Only
(b) 2 and 3 Only
(c) 1 and 3 Only
(d) 1, 2 and 3
11. Consider the following:
1. 1. Bacteria
2. 2. Fungi
3. 3. Virus
Which of the above can be cultured in
artificial/synthetic medium?
(a) 1 and 2 Only
(b) 2 and 3 Only
(c) 1 and 3 Only
(d) 1, 2 and 3
12. Consider the following statements:
1. Adenoviruses have single-stranded DNA genomes
whereas retroviruses have double-stranded DNA genomes.
2. Common cold is sometime caused by an
adenovirus whereas AIDS is caused by a retrovirus.
Which of the statements given above
is/are correct?
(a) 1 Only
(b) 2 Only
(c) Both 1 and 2
(d) Neither 1 nor 2
2020
1.With reference to carbon nanotubes, consider the
following statements:
1. They can be used as carriers of drugs and
antigens in the human body.
2. They can be made into artificial blood
capillaries for an injured part of human body.
3. They can be used in biochemical sensors.
4. Carbon nanotubes are biodegradable.
Which of the
statements given above are correct?
(a) 1 and 2 only
(b) 2, 3 and 4 only
(c) 1,3 and 4 only
(d) 1,2,3 and 4
2.Consider the following activities:
1. Spraying pesticides on a crop field
2. Inspecting the craters of active volcanoes
3. Collecting breath samples from spouting whales
for DNA analysis
At the present level
of technology, which of the above activities can be successfully carried out by
using drones?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1,2 and 3
3.“The experiment will employ a trio of spacecraft
flying in formation in the shape of an equilateral triangle that has sides one
million kilometres long, with lasers shining between the craft”. The experiment
in question refers to
(a) Voyager
(b) New Horizons
(c) LISA Pathfinder
(d) Evolved LISA
4.Consider the following statements:
1. Genetic changes can be introduced in the cells
that produce eggs or sperms of a prospective parent.
2. A person’s genome can be edited before birth
at the early embryonic stage.
3. Human /induced pluripotent stem cells can be
injected into the embryo of a pig.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 2 only
(d) 1, 2 and 3
5.What is the importance of using \ Pneumococcal
Conjugate Vaccines in India?
1. These vaccines are effective against pneumonia
as well as meningitis and sepsis.
2. Dependence on antibiotics that are not
effective against drug-resistant bacteria can be reduced.
3. These vaccines have no side effects and cause
no allergic reactions.
Select the correct answer using the code given below:
(a) 1 only
(b) 1 and 2 only
(c) 3 only
(d) 1, 2 and 3
Answer: b
6.In India, the term “Public Key Infrastructure” is
used in the context of
(a) Digital security infrastructure
(b) Food security
infrastructure
(c) Health care and
education infrastructure
(d) Telecommunication
and transportation infrastructure
7.Which of the following statements are correct
regarding the general difference between plant and animal cells?
1. Plant cells have cellulose cell walls whilst
animal cells do not.
2. Plant cells do not have plasma membrane unlike
animal cells which do.
3. Mature plant cell has one large vacuole whilst
animal cell has many small vacuoles.
Select the correct
answer using the code given below:
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
8.In the context of recent advances in human
reproductive technology, “Pronuclear Transfer” is used for(
(a) fertilization of
egg in vitro by the donor sperm
(b) genetic
modification of sperm producing cells
(c) development of stem
cells into functional embryos
(d) prevention of mitochondrial diseases in offspring
Answer: d
9.With the present state of development, Artificial
Intelligence an effectively do which of the following?
1. Bring down electricity consumption in
industrial units.
2. Create meaningful short stories and songs.
3. Disease diagnosis.
4. Text-to-Speech Conversion.
5. Wireless transmission of electrical energy.
Select the correct
answer using the code given below:
(a) 1, 2, 3 and 5 only
(b) 1, 3 and 4 only
(c) 2, 4 and 5 only
(d) 1, 2, 3, 4 and 5
10.With reference to Visible Light Communication
(VLC) technology, which of the following statements are correct?
1. VLC uses electromagnetic spectrum wavelengths
375 to 780 nm.
2. VLC is known as long-range optical wireless
communication.
3. VLC can transmit large amounts of data faster
than Bluetooth
4. VLC has no electromagnetic interference.
Select the correct
answer using the code given below:
(a) 1, 2 and 3 only
(b) 1, 2 and 4 only
(c) 1, 3 and 4 only
(d) 2, 3 and 4 only
11.With reference to “Blockchain Technology”,
consider the following statements:
1. It is a public ledger that everyone can
inspect, but which no single user controls.
2. The structure and design of blockchain is such
that all the data in it are about cryptocurrency only.
3. Applications that depend on basic features of
blockchain can be developed without anybody’s permission.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 2 only
(d) 1 and 3 only
12.With reference to solar water pumps, consider the
following statements:
1. Solar power can be used for running surface
pumps and not for submersible pumps.
2. Solar power can be used for running
centrifugal pumps and not the ones with piston.
Which of the statements
given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
13.In India, why are some nuclear reactors kept
under “IAEA Safeguards” while others are not?
(a) Some use uranium and other use thorium
(b) Some use imported uranium and others use domestic supplies
(c) Some are operated
by foreign enterprises and other are operated by domestic enterprises
(d) Some are
State-owned and others are privately-owned
2019
1.For the
measurement/estimation of which of the following are satellite images/remote
sensing data used?
1.Chlorophyll content
in the vegetation of a specific location
2.Greenhouse gas
emissions from rice paddies of a specific location
3.Land surface temperatures
of a specific location
Select the correct
answer using the code given below.
(a) 1 Only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
2. With reference to
communication technologies, what is/are the difference/differences between LTE
(Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?
1.LTE is commonly
marketed as 3G and VoLTE is commonly marketed as advanced 3G.
2.LTE is data-only
technology and VoLTE is voice-only technology.
Select the correct
answer using the code given below
(a) 1 Only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
3. Recently, India
signed a deal known as ‘Action Plan for Prioritization and Implementation of
Cooperation Areas in the Nuclear Field’ with which of the following countries?
(a) Japan
(b) Russia
(c) The United Kingdom
(d) The United States
of America
4. In the context of
digital technologies for entertainment, consider the following statements:
1.In Augmented Reality
(AR), a simulated environment is created and the physical world is completely
shut out.
2.In Virtual Reality
(VR), images generated from a computer are projected onto real-life objects or
surroundings.
3.AR allows
individuals to be present in the world and improves the experience using the
camera of smart-phone or PC.
4.VR closes the world,
and transposes an individual, providing complete immersion experience.
Which of the
statements given above is/are correct?
(a) 1 and 2 only
(b) 3 and 4
(c) 1, 2 and 3
(d) 4 only
5. With reference to
the recent developments in science, which one of the following statements is
not correct?
(a) Functional
chromosomes can be created by joining segments of DNA taken from cells of
different species.
(b) Pieces of
artificial functional DNA can be created in laboratories.
(c) A piece of DNA
taken out from an animal cell can be made to replicate outside a living cell in
a laboratory.
(d) Cells taken out
from plasma and animals can be made to undergo cell division in laboratory
petri dishes.
6.Consider the
following statements:
A digital signature is
1.an electronic record
that identifies the certifying authority issuing it
2.used to serve as a
proof of identity of an individual to access information or server on Internet
3.an electronic method
of signing an electronic document and ensuring that the original content is
unchanged
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
7. In the context of
wearable technology, which of the following tasks is/are accomplished by
wearable devices?
1.Location
identification of a person
2.Sleep monitoring of
a person
3.Assisting the
hearing impaired person
Select the correct
answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
8. RNA interference
(RNAi)’ technology has gained popularity in the last few years. Why?
1.It is used in
developing gene silencing therapies.
2.It can be used in
developing therapies for the treatment of cancer.
3.It can be used to
develop hormone replacement therapies.
4.It can be used to
produce crop plants that are resistant to viral pathogens.
Select the correct
answer using the code given below.
(a) 1, 2 and 4
(b) 2 and 3
(c) 1 and 3
(d) 1 and 4 only
9. Recently,
Scientists observed the merger of giant blackholes’ billions of light-years
away from the Earth. What is the significance of this observation?
(a) ‘Higgs boson
particles’ were detected.
(b) ‘Gravitational
waves’ were detected.
(c) Possibility of
inter-galactic space travel through ‘wormhole’ was confirmed.
(d) It enabled the
scientists to understand ‘singularity’.
10. Which of the
following are the reasons for the occurrence of multi-drug resistance in
microbial pathogens in India?
1.Genetic
predisposition of some people
2.Taking incorrect
doses of antibiotics to cure diseases
3.Using antibiotics in
livestock farming
4.Multiple chronic
diseases in some people
Select the correct
answer using the code given below.
(a) 1 and 2
(b) 2 and 3 only
(c) 1, 3 and 4
(d) 2, 3 and 4
11. What is Cas9
protein that is often mentioned in news?
(a) A molecular
scissors used in targeted gene editing
(b) A biosensor used
in the accurate detection of pathogens in patients
(c) A gene that makes
plants pest-resistant
(d) A herbicidal
substance synthesized in genetically modified crops
13. Which one of the
following statements is not correct? (a) Hepatitis B virus is transmitted much
like HIV. (b) Hepatitis B. unlike Hepatitis C, does not have a vaccine. (c)
Globally, the number of people infected with Hepatitis B and C viruses arc
several times more than those infected with HIV. (d) Some of those infected
with Hepatitis B and C viruses do not show the symptoms for many years. Answer:
B
2018
1. Consider the following pairs:
Commonly used/consumed materials Unwanted or controversial
chemicals likely to be
found in them
1. Lipstick
—
Lead
2. Soft Drinks
—
Brominated vegetable oils
3. Chinese fast food
—
Monosodium glutamate
Which of the pairs
given above is/are correctly matched?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2. With reference to India’s satellite launch
vehicles, consider the following statements:
1. PSLVs launch the satellites useful for Earth
resources monitoring whereas GSLVs are designed mainly to launch communication
satellites.
2. Satellites launched by PSLV appear to remain
permanently fixed in the same position in the sky, as viewed from a particular
location on Earth.
3. GSLV Mk III is a four-staged launch vehicle
with the first and third stages using solid rocket motors; and the second and
fourth stages using liquid rocket engines.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 and 3
(c) 1 and 2
(d) 3 only
3. Consider the following:
1. Birds
2. Dust blowing
3. Rain
4. Wind blowing
Which of the above
spread plant diseases?
(a) 1 and 3 only
(b) 3 and 4 only
(c) 1, 2 and 4 only
(d) 1, 2, 3 and 4
4. What is “Terminal High Altitude Area Defense
(THAAD)”, sometimes seen in the news?
(a) An Israeli radar
system
(b) India’s indigenous
anti-missile programme
(c) An American anti-missile system
(d) A defence
collaboration between Japan and South Korea.
5. “3D printing” has applications in which
of the following?
1. Preparation of confectionery items
2. Manufacture of bionic ears
3. Automotive industry
4. Reconstructive surgeries
5. Data processing technologies
Select the correct
answer using the code given below.
(a) 1, 3 and 4 only
(b) 2, 3 and 5 only
(c) 1 and 4 only
(d) 1, 2, 3, 4 and 5
6. With reference to the Indian Regional Navigation
Satellite System (IRNSS), consider the following statements:
1. IRNSS has three satellites in geostationary
and four satellites in geosynchronous orbits.
2. IRNSS covers entire India and about 5500 sq.
km beyond its borders.
3. India will have its own satellite navigation
system with full global coverage by the middle of 2019.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) None
7. Consider the following statements:
1. Light is affected by gravity.
2. The Universe is constantly expanding.
3. Matter warps its surrounding space-time.
Which of the above
is/are the prediction/predictions of Albert Einstein’s General Theory of
Relativity, often discussed in media?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
8. With reference to the Genetically Modified
mustard (GM mustard) developed in India, consider the following statements:
1. GM mustard has the genes of a soil bacterium
that give the plant the property of pest-resistance to a wide variety of pests.
2. GM mustard has the genes that allow the plant
cross-pollination and hybridization.
3. GM mustard has been developed jointly by the
IARI and Punjab Agricultural University.
Which of the
statements given above is/are correct?
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
9. Consider the following pairs:
Terms sometimes
Context/Topic
seen
in news
1. Belle II experiment
— Artificial Intelligence
2. Blockchain technology —
Digital/Cryptocurrency
3. CRISPR – Cas9
— Particle Physics
Which of the pairs
given above is/are correctly matched?
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
10. When the alarm of your smartphone rings in the
morning, you wake up and tap it to stop the alarm which causes your geyser to
be switched on automatically. The smart mirror in your bathroom shows the day’s
weather and also indicates the level of water in your overhead tank. After you
take some groceries from your refrigerator for making breakfast, it recognises
the shortage of stock in it and places an order for the supply of fresh grocery
items. When you step out of your house and lock the door, all lights, fans,
geysers and AC machines get switched off automatically. On your way to office,
your car warns you about traffic congestion ahead and suggests an alternative
route, and if you are late for a meeting, it sends a message to your office
accordingly.
In the context of
emerging communication technologies, which one of the following terms best
applies to the above scenario?
(a) Border Gateway
Protocol
(b) Internet of Things
(c) Internet Protocol
(d) Virtual Private
Network
11. In which of the following areas can GPS
technology be used?
1. Mobile phone operations
2. Banking operations
3. Controlling the power grids
Select the correct
answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
12. The terms ‘WannaCry, Petya and Eternal Blue’
sometimes mentioned in the news recently are related to
(a) Exoplanets
(b) Cryptocurrency
(c) Cyber attacks
(d) Mini satellites
13. The identity platform ‘Aadhaar’ provides open
“Application Programming Interfaces (APIs)”. What does it imply?
1. It can be integrated into any electronic
device.
2. Online authentication using iris is possible.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
14. India enacted the Geographical Indications of
Goods (Registration and Protection) Act, 1999 in order to comply with the
obligations to
(a) ILO
(b) IMF
(c) UNCTAD
(d) WTO
15. What is/are the consequence/consequences of a
country becoming the member of the ‘Nuclear Suppliers Group’?
1. It will have access to the latest and most
efficient nuclear technologies.
2. It automatically becomes a member of “The
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)”.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2017
16. Consider the following statements:
1. In tropical regions, Zika virus disease is
transmitted by ‘the same mosquito that transmits dengue.
2. Sexual transmission of Zika virus disease is
possible
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
17. What is the purpose of ‘evolved Laser
Interferometer Space Antenna’ (eLISA) project?
(a) To detect
neutrinos
(b) To detect gravitational waves
(c) To detect the
effectiveness of missile defence system
(d) To study the
effect of solar flares on our communication systems
18. What is the application of Somatic Cell Nuclear
Transfer Technology?
(a) Production of
biolarvicides
(b) Manufacture of
biodegradable plastics
(c) Reproductive cloning of animals
(d) Production of
organisms free of diseases
19. With reference to agriculture in India, how can
the technique of ‘genome sequencing’, often seen in the news, be used in the
immediate future?
1. Genome sequencing can be used to identify
genetic markers for disease resistance and drought tolerance in various crop
plants.
2. This technique helps in reducing the time
required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen
relationships in crops
Select the correct
answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
20. In India, it is legally mandatory for which of
the following to report on cyber security incidents?
1. Service providers
2. Data centers
3. Body corporate
Select the correct
answer using the codes given below:
(a) 1 only
(b) 1 and 2 only
(c) 3 only
(d) 1, 2 and 3
21. Organic Light Emitting Diodes (OLEDs) are used
to create digital display in many devices. What are the advantages of OLED
displays over Liquid Crystal displays?
1. OLED displays can be fabricated on flexible
plastic substrates.
2. Roll-up displays embedded in clothing can be
made using OLEDs.
3. Transparent displays are possible using OLEDs.
Select the correct
answer using the codes given below:
(a) 1 and 3 only
(b) 2 only
(c) 1, 2 and 3
(d) None of the above
statement is correct
2016
22. ‘Project Loon’, sometimes seen in the news, is
related to
(a) waste management
technology
(b) wireless communication technology
(c) solar power
production technology
(d) water conservation
technology
23. Which of the following statements is/are
correct?
Viruses can infect
1. bacteria
2. fungi
3. plants
Select the correct
answer using the code given below:
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
24. Consider the following statements:
The Mangalyaan
launched by ISRO
1. is also called the Mars Orbiter Mission
2. made India the second country to have a
spacecraft orbit the Mars after USA
3. made India the only country to be successful
in making its spacecraft orbit the Mars in its very first attempt
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
25. With reference to ‘Astrosat’, the astronomical
observatory launched by India, which of the following statement(s) is/are
correct?
1. Other than USA and Russia, India is the only
country to have launched a similar observatory into space.
2. Astrosat is a 2000 kg satellite placed in an
orbit at 1650 km above the surface of the Earth.
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 only
(c) Both1 and 2
(d) Neither 1 nor 2
26. Which one of the following is the best
description of ‘INS Astradharini’, that was in the news recently?
(a) Amphibious warfare
ship
(b) Nuclear-powered
submarine
(c) Torpedo launch and recovery vessel
(d) Nuclear-powered
aircraft carrier
27. India is an important member of the
‘International Thermonuclear Experimental Reactor’. If this experiment
succeeds, what is the immediate advantage of India?
(a) It can use thorium
in place of uranium for power generation.
(b) It can attain a
global role in satellite navigation
(c) It can drastically
improve the efficiency of its fission reactors in power generation
(d) It can build fusion reactors for
power generation
28. In the context of the developments in
Bioinformatics, the term ‘transcriptome’, sometimes seen in the news, refers to
(a) a range of enzymes
used in genome editing
(b) the full range of mRNA molecules
expressed by an organism
(c) the description of
the mechanism of gene expression
(d) a mechanism of
genetic mutation taking place in cells
29. With reference to pre-packed items in India, it
is mandatory to the manufacturer to put which of the following information on
the main label, as per the Food Safety and Standards (Packaging and Labelling)
Regulation, 2011?
1. List of ingredients including additives
2. Nutrition information
3. Recommendations, if any, made by the medical
profession about the possibility of any allergic reaction
4. Vegetarian/non-vegetarian
Select the correct
answer using the codes given below:
(a) 1, 2 and 3 only
(b) 2, 3 and 4 only
(c) 1, 2 and 4 only
(d) 1 and 4 only
30. With reference to ‘LiFi’, recently in the news,
which of the following statement(s) is/are correct?
1. It uses light as the medium for high speed
data transmission.
2. It is a wireless technology and several times
faster than ‘WiFi’.
Select the correct
answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
31. With reference to ‘Bitcoins’, sometimes seen in
the news, which of the following statement(s) is/are correct?
1. Bitcoins are tracked by the Central Banks of
the countries.
2. Anyone with a Bitcoin address can send and
receive Bitcoins from anyone else with a Bitcoin address.
3. Online payments can be sent without either
side knowing the identity of the other.
Select the correct
answer using the codes given below.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
32. What is ‘Greased Lightning-10 (GL-10)’, recently
in the news?
(a) Electric plane tested by NASA
(b) Solar-powered
two-seater aircraft designed by Japan
(c) Space observatory
launched by China
(d) Reusable rocket
designed by ISRO
33. What is Medecins Sans Frontiers (MSF)?
(a) An agency formed
by the International Olympic Committee (IOC) to check misuse of drugs by
sportspersons
(b) A non-governmental organization
which specializes in international humanitarian aid and emergency medical
assistance
(c) An organization to
develop applications of nanotechnology in medicine
(d) An organization of
medical practitioners funded by the European Union which carries out reach
against spread of AIDS
2015
34. With reference to ‘fly ash’ produced by the
power plants using coal as fuel, which of the following statements is/are
correct?
1. Fly ash can be used in the production of
bricks for building construction.
2. Fly ash can be used as a replacement for some
of the Portland cement contents of concrete.
3. Fly ash is made up of silicon dioxide and
calcium oxide only, and does not contain any toxic elements.
Select the correct
answer using the code given below.
(a) 1 and 2
(b) 2 only
(c) 1 and 3
(d) 3 only
35. In the context of modern scientific research,
consider the following statements about ‘lceCube’, a particle detector located
at South Pole, which was recently in the news:
1. It is the world’s largest neutrino detector,
encompassing a cubic kilometre of ice.
2. It is a powerful telescope to search for dark
matter.
3. It is buries deep in the ice.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
36. The term ‘Goldilocks Zone’ is often seen news in
the context of
(a) the limits of
habitable zone above the surface of the Earth
(b) regions inside the
Earth where shale gas is available
(c) search for the Earth-like planets
in outer space
(d) search for
meteorites containing precious metals
37. With reference to ‘fuel cells’ in which
hydrogen-rich fuel and oxygen are used to generate electricity, consider the
following statements:
1. If pure hydrogen is used as a fuel, the fuel
cell emits heat and water as by-products.
2. Fuel cells can be used for powering buildings
and not for small devices like laptop computers.
3. Fuel cells produce electricity in the form of
Alternating Current (AC).
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
38. In which of the following activities are Indian
Remote Sensing (IRS) satellites used?
1. Assessment of crop productivity
2. Locating groundwater resources
3. Mineral exploration
4. Telecommunications
5. Traffic studies
Select the correct
answer using the codes given below.
(a) 1, 2 and 3 only
(b) 4 and 5 only
(c) 1 and 2 only
(d) 1, 2, 3, 4 and 5
39. With reference to the use of Nano-technology in
health sector, which of the following statement(s) is/are correct?
1. Targeted drug delivery is made possible by
nanotechnology.
2. Nanotechnology can largely contribute to gene
therapy.
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
40. H1N1 virus is sometimes mentioned in the news
with reference to which one of the following diseases?
(a) AIDS
(b) Bird flu
(c) Dengue
(d) Swine flu
41. With reference to ‘Near Field Communication
(NFC) Technology’, which of the following is/are correct?
1. It is a contactless communication technology
that uses electromagnetic radio fields.
2. NFC is designed for use by devices which can
be at a distance of even a metre from each other.
3. NFC can use encryption when sending sensitive
information.
Select the correct
answer using the codes given below.
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2014
42. Which of the following are some important
pollutants released by steel industry in India?
1. Oxides of sulphur
2. Oxides of nitrogen
3. Carbon monoxide
4. Carbon dioxide
Select the correct
answer using the code given below
(a) 1, 3 and 4 only
(b) 2 and 3 only
(c) 1 and 4 only
(d) 1, 2, 3 and 4
43. Lichens, which are capable of initiating
ecological succession even on a bare rock, are actually a symbiotic association
of
(a) Algae and bacteria
(b) Algae and fungi
(c) Bacteria and fungi
(d) Fungi and mosses
44. Which one of the following is the process
involved in photosynthesis?
(a) Potential energy
is released to form free energy
(b) Free energy is converted into
potential energy and stored
(c) Food is oxidized
to release carbon dioxide and water
(d) Oxygen is taken,
and carbon dioxide and water vapour are given out.
45. Which of the following is/are the
example/examples of chemical change?
1. Crystallization of sodium chloride
2. Melting of ice
3. Souring of milk
Select the correct
answer using the code given below.
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
46. Which of the following statements is/are correct
regarding vegetative propagation of plants?
1. Vegetative propagation produces clonal
population.
2. Vegetative propagation helps in eliminating
the virus.
3. Vegetative propagation can be practiced most
of the year.
Select the correct
answer using the code given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
47. Consider the following pairs:
Vitamin Deficiency
disease
1. Vitamin C Scurvy
2. Vitamin D Rickets
3. Vitamin E Night blindness
Which of the pairs
given above is/are correctly matched?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
48. Consider the following techniques/phenomena:
1. Budding and grafting in fruit plants
2. Cytoplasmic male sterility
3. Gene silencing
Which of the above
is/are used to create transgenic crops?
(a) 1 only
(b) 2 and 3
(c) 1 and 3
(d) None
49. Among the following organisms, which one does
not belong to the class of other three?
(a) Crab
(b) Mite
(c) Scorpion
(d) Spider
50. Consider the following statements:
1. Maize can be used for the production of
starch.
2. Oil extracted from maize can be a feedstock
for biodiesel.
3. Alcoholic beverages can be produced by using
maize.
Which of the
statements given above is/are correct?
(a) 1 only.
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
51. Consider the following diseases
1. Diphtheria
2. Chickenpox
3. Smallpox
Which of the above
diseases has/have been eradicated in India?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
52. Consider the following:
1. Bats
2. Bears
3. Rodents
The phenomenon of
hibernation can be observed in which of the above kinds of animals?
(a) 1 and 2 only
(b) 2 only
(c) 1, 2 and 3
(d) Hibernation cannot
be observed in any of the above
53. Which of the following adds/add carbon dioxide
to the carbon cycle on the planet Earth?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
Select the correct
answer using the code given below.
(a) 1 and 3 only
(b) 2 only
(c) 1, 2 and 4 only
(d) 1, 2, 3 and 4
54. Which of the following pair(s) is/are correctly
matched?
Spacecraft
Purpose
1. Cassini-Huygens :
Orbiting the Venus and transmitting data to the Earth
2. Messenger
: Mapping and investigating the Mercury
3. Voyager 1 & 2
: Exploring the outer solar system
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
55. With reference to Agni-IV Missile, which of the
following statement(s) is/are correct?
1. It is surface-to-surface missile.
2. It is fuelled by liquid propellant only.
3. It can deliver one tonne nuclear warhead about
7500 km away.
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
56. With reference to technologies for solar power
production, consider the following statements:
1. ‘Photovoltaics’ is a technology that generates
electricity by direction conversion of light into electricity, while ‘Solar
Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is
further used in electricity generation process.
2. Photovoltaics generate Alternating Current
(AC), while solar Thermal generates Direct Current (DC).
3. India has manufacturing base for Solar Thermal
technology, but not for Photovoltaics.
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1, 2 and 3
(d) None
57. Brominated flame retardants are used in many
household products like mattresses and upholstery. Why is there some concern
about their use?
1. They are highly resistant to degradation in
the environment.
2. They are able to accumulate in humans and
animals.
Select the correct
answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
58. There is some concern regarding the
nanoparticles of some chemical elements that are used by the industry in the
manufacture of various products. Why?
1. They can accumulate in the environment, and
contaminate water and soil.
2. They can enter the food chains.
3. They can trigger the production of free
radicals.
Select the correct
answer using the codes given below:
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
59. In India, cluster bean (Guar) is traditionally
used as a vegetable or animal feed, but recently the cultivation of this has
assumed significance. Which one of the following statements is correct in this
context?
(a) The oil extracted
from seeds is used in the manufacture of biodegradable plastics
(b) The gum made from its seeds is
used in the extraction of shale gas
(c) The leaf extract
of this plant has the properties of anti-histamines
(d) It is a source of
high quality biodiesel
60. With reference to two non-conventional energy
sources called ‘coalbed methane’ and ‘shale gas’, consider the following
statements:
1. Coalbed methane is the pure methane gas
extracted from coal seams, while shale gas is a mixture of propane and butane
only that can be extracted from fine-grained sedimentary rocks.
2. In India, abundant coalbed methane sources
exist, but so far no shale gas sources have been found.
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
61. In addition to fingerprint scanning, which of
the following can be used in the biometric identification of a person?
1. Iris scanning
2. Retinal scanning
3. Voice recognition
Select the correct
answer using the code given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2013
62. Which of the following adds/add nitrogen to the
soil?
1. Excretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the correct
answer using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
63. Consider the following animals:
1. Sea cow
2. Sea horse
3. Sea lion
Which of the above
is/are mammal/mammals?
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
64. Improper handling and storage of cereal grains
and oilseeds result in the production of toxins known as aflatoxins which are
not generally destroyed by normal cooking process. Aflatoxins are produced by
(a) Bacteria
(b) Protozoa
(c) Moulds
(d) Viruses
65. Which of the following diseases can be
transmitted from one person to another through tattooing?
1. Chikungunya
2. Hepatitis B
3. HIV-AIDS
Select the correct
answer using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
66. Consider the following organisms:
1. Agaricus
2. Nostoc
3. Spirogyra
Which of the above
is/are used as biofertilizer/biofertilizers?
(a) 1 and 2
(b) 2 only
(c) 2 and 3
(d) 3 only
67. Which of the following statements is/are correct
1. Viruses lack enzymes necessary for the
generation of energy.
2. Viruses can be cultured in any synthetic
medium.
3. Viruses are transmitted from one organism to
another by biological vectors only.
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
68. Consider the following minerals:
1. Calcium
2. Iron
3. Sodium
Which of the minerals
given above is/are required by human body for the contraction of muscles?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
69. Fruits stored in a cold chamber exhibit longer
storage life because
(a) exposure to
sunlight is prevented
(b) concentration of
carbon dioxide in the environment is increased
(c) rate of
respiration is decreased
(d) there is an increase
in humidity
70. The known forces of nature can be divided into
four classes, viz. gravity, electromagnetism, weak nuclear force and strong
nuclear force. With reference to them, which one of the following statements is
not correct?
(a) Gravity is the
strongest of the four
(b) Electromagnetism
acts only on particles with an electric charge
(c) Weak nuclear force
causes radioactivity
(d) Strong nuclear
force holds protons and neutrons inside the nucleus of an atom
71. Consider the following phenomena:
1. Size of the sun at dusk
2. Colour of the sun at dawn
3. Moon being visible at dawn
4. Twinkle of stars in the sky
5. Polestar being visible in the sky
Which of the above are
optical illusions?
(a) 1, 2 and 4 only
(b) 3, 4 and 5 only
(c) 1, 2 and 4 only
(d) 2, 3 and 5 only
72. Due to improper/indiscriminate disposal of old
and used computers or their parts, which of the following are released into the
environment as e-waste?
1. Beryllium
2. Cadmium
3. Chromium
4. Heptachlor
5. Mercury
6. Lead
7. Plutonium
Select the correct
answer using the codes given below:
(a) 1, 3, 4, 6 and 7
only
(b) 1, 2, 3, 5 and 6
only
(c) 2, 4, 5 and 7 only
(d) 1, 2, 3, 4, 5, 6
and 7
73. The efforts to detect the existence of Higgs
boson particle have become frequent news in the recent past. What is/are the
importance (s) of discovering this particle?
1. It will enable us to understand as to why
elementary particles have mass.
2. It will enable us in the near future to
develop the technology of tranferring matter from one point to another without
traversing the physical space between them.
3. It will enable us to create better fuels for
nuclear fission.
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
74. Many transplanted seedlings do not grow because
(a) the new soil does
not contain favourable minerals
(b) most of the root
hairs grip the new soil too hard
(c) most of the root
hairs are lost during transplantation
(d) leaves get damaged
during transplantation
75. Recombinant DNA technology (Genetic Engineering)
allows genes to be transferred
1. Across different species of plants
2. From animals to plants
3. From microorganisms to higher organisms
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
76. Mycorrhizal biotechnology has been used in
rehabilitating degraded sites because mycorrhiza enables the plants to
1. resist drought and increase absorptive area
2. tolerate extremes of pH
3. resist disease infestation
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2012
77. Consider the following kinds of
organisms:
1. Bat
2. Bee
3. Bird
Which of the above
is/are pollinating agent/agents?
(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
78. Consider the following statements:
If there were no
phenomenon of capillarity
1. It would be difficult to use a kerosene lamp
2. One would not be able to use a straw to
consume a soft drink
3. The blotting paper would paper would fail to
function
4. The big trees that we see around would not
have grown on the earth
Which of the following
statements given above are correct?
(a) 1, 2 and 3 only
(b) 1, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
79. Graphene is frequently in news recently. What is
its important?
1. It is a twodimensional material and has good
electrical conductivity.
2. It is one of the thinnest but strongest
materials tested so far.
3. It is entirely made of silicon and has high
optical transparency.
4. It can be used as ‘conducting electrodes’
requires for touch screens, LCD’s and organic LED’s
Which of the
statements given above are correct?
(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 2 and only
(d) 1, 2, 3 and 4
80. Which of the following is/are cited by the
scientists as evidence/evidences for the continued expansion of universe?
1. Detection of microwaves in space
2. Observation of redshirt phenomenon in space
3. Movement of asteroids in space
4. Occurrence of supernova explosions in space
code
(a) 1 and 2 only
(b) 2 only
(c) 1, 3 and 4
(d) None of the above
81. Electrically charged particles from space
travelling at speeds of several hundred km/sec can severely harm living beings
if they reach the surface of the earth. What prevents them from reaching the
surface of the earth?
(a) The Earth’s
magnetic field diverts them toward its poles
(b) Ozone layer around
the Earth reflects them back to outer space
(c) Moister in the
upper layers of atmosphere prevents them from reaching the surface of the Earth
(d) None of the
statements (a),(b) and (c) is correct.
82. Lead, ingested or inhaled, is a health hazard.
After the addition of lead to petrol has been banned, what still are the
sources of lead poisoning?
1. Smelting units
2. Pens pencils
3. Paints
4. Hair oils and cosmetics
Select the correct
answer using the codes given below:
(a) 1, 2 and 3 only
(b) 1 and 3 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
83. What is the role of ultraviolet (UV) radiation
in the water purification systems?
1. It inactivates/kills the harmful microorganisms
in water.
2. It removes all the undesirable odours from the
water
3. It quickens the sedimentation of solid
particles, removes turbidity and improves the clarity of water.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
84. Other than resistance to pests, what are the
prospects for which genetically engineered plants have been created?
(a) To enable them to
withstand drought
(b) To increase the
nutritive value of the produce
(c) To enable them to
grow and do photosynthesis in spaceships and space stations
(d) To increase their
shelf life
85. Which one of the following sets of elements was
primarily responsible for the origin of life on the Earth?
(a) Hydrogen, Oxygen,
Sodium
(b) Carbon, Hydrogen,
Nitrogen
(c) Oxygen, Calcium,
Phosphorous
(d) Carbon, Hydrogen,
Potassium
86. Consider the following kinds of organisms:
1. Bacteria
2. Fungi
3. Flowering plants
Some species of which
of the above kinds of organisms are employed as bio pesticides?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d ) 1, 2 and 3
87. A team of scientists at Brookhaven National
Laboratory including those from India created the heaviest antimatter (antihelium
nucleus) What is/are the implications of the creation of antimatter?
1. It will make mineral prospecting and oil
exploration easier and cheaper.
2. It will help probe the possibility of the
existence of stars and galaxies made of anti matter.
3. It will help understand the evolution of the
universe.
Select the correct answer
using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
88. To meet its rapidly growing energy demand, some
opine that India should pursue research and development on thorium as the
future fuel of nuclear energy. In this context, what advantage does thorium
hold over uranium?
1. Thorium is far more abundant in nature than
uranium.
2. On the basis of unit mass of mined mineral,
thorium can generate more energy compared to natural uranium
3. Thorium produces less harmful waster compared
to uranium.
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
89. Recently, there has been a concern over the
short supply of a group of elements called ‘rare earth metals’. Why?
1. China, which is the largest producer of these
elements, has imposed some restrictions on their export.
2. Other than China, Australia, Canada and Chile,
these elements are not found in any country.
3. Rare earth metals are essential for the
manufacture of various kinds of electronic items and there is a growing demand
for these elements.
Which of the statement(s)
given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
90. With reference to ‘stem cells’, frequently in
the news, which of the following statement(s) is/are correct?
1. Stem cells can be derived from mammals only.
2. Stem cells can be used for screenings new
drugs.
3. Stem cells can be used for medical therapies.
Select the correct
answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
91. What are the reasons for the people’s resistance
to the introduction of Bt brinjal in India?
1. Bt brinjal has been created by inserting a
gene from a soil funguns into its genome.
2. The seeds of Bt brinjal are terminator seeds
and therefore, the farmers have to buy the seeds before every season from the
seed companies.
3. There is an apprehension that the consumption
of Bt-brinjal may have adverse impact on health.
4. There is some concern that the introduction of
Bt-brinjal may have adverse effect on the biodiversity.
Select the correct
answer using the codes given below:
(a) 1, 2 and 3 only
(b) 2 and 3 only
(c) 3 and 4 only
(d) 1, 2, 3 and 4
92. Biomass gasification is considered to be one of
the sustainable solutions to the power crisis in India. In this context, which
of the following statement(s) is/are correct?
1. Coconut shells, groundnut shells and rice husk
can be used in biomass gasification.
2. The combustible gases generated from biomass
gasification consist of hydrogen and carbon dioxide only.
3. The combustible gases generated from biomass
gasification can be used for direct heat generation, but not in internal
combustion engines.
Select the correct
answer using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2011
93. Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic eruption
Which of the above add
carbon dioxide to the carbon cycle on earth?
(a) 1 and 4 only
(b) 2 and 3 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4
94. The surface of a lake is frozen in severe
winter, but the water at its bottom is still liquid. What is reason?
(a) Ice is a bad
conductor of heat.
(b) Since the surface
of the lake is at the same temperature as the air, no heat is lost.
(c) The density of
water is Maximum at 4 degree Celsius.
(d) None of the above
95. Regular intake of fresh fruits and vegetables is
recommended in the diet since they are a good source of antioxidants .How do
antioxidants help a person maintain health and promote longevity?
(a) They activate the
enzymes necessary for vitamin synthesis in the body and help prevent vitamin
deficiency.
(b) They prevent
excessive oxidation of Carbohydrates, fats and proteins in the body and avoid
unnecessary wastage of energy.
(c) They neutralize
the free radicals produced in the body during metabolism.
(d) They activate
certain genes in the cells of the body and help delay the ageing process.
96. A company marketing food products advertises
that its items do not contain trans-fats. What does this campaign signify to
the customers?
1. The food products are not made out of
hydrogenated oils.
2. The food products are not made out of animal
fats.
3. The oils used are not likely to damage the
cardiovascular health of consumers.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
97. Aspartame is an artificial sweetener sold in the
market. It consist of amino acids and provides calories like other amino acids.
Yet, it is used as a lowcalorie sweetening agent in food items. What is the
basis of this use?
(a) Aspartame is as
sweet as table sugar, but unlike table sugar, it is not readily oxidized in
human body due to lack of requisite enzymes.
(b) When aspartame is
used in food processing, the sweet taste remains, but it becomes resistant to
oxidation.
(c) Aspartame is as
sweet as sugar, but after ingestion into the body, it is converted into
metabolites that yield no calories.
(d) Aspartame is
several times sweeter than table sugar, hence food items made with small
quantities of aspartame yield fewer calories on oxidation.
98. A married couple adopted a male child. A few
years later, twin boys were born to them. The blood group of the couple is AB
positive and O negative. The blood group of the three sons is A positive, B
positive , and O positive. The blood group of the adopted son is ?
(a) O Positive
(b) A Positive
(c) B Positive
(d) Cannot be
determined on the basis of the given data
99. What is difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while
comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits
of Jupiter and Mars, while comets are found mostly between Venus and mercury.
3. Comets show a perceptible glowing tail, while
asteroids do not.
Which of the
statements given above is/are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3
100. When the bark of a tree is removed in a
circular fashion all around near its base, it gradually dries up and dies
because
(a) Water from soil
cannot rise to aerial parts.
(b) Roots are starved
of energy.
(c) Tree is infected
by soil microbes.
(d) Roots do not
receive oxygen for respiration.
101. A layer in the Earth’s atmosphere called
ionosphere facilities radio communication. Why?
1. The presence of ozone causes the reflection of
radio waves to earth.
2. Radio waves have a very long wavelength.
Which of the
statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
102. What is the difference between a CFL and an LED
lamp?
1. To produce light, a CFL uses mercury vapour
and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer
than that of an LED lamp.
3. A CFL is less energy-efficient as compared to
an LED lamp.
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
103. What is the difference between Bluetooth and
Wi-Fi devices?
(a) Bluetooth uses 2.4
GHz radio frequency band, whereas Wi-Fi can use 2.4 GHz or 5 GHz frequency band
(b) Bluetooth is used
for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for
Wireless Wide Area Networks (WWAN) only
(c) When information
is transmitted between two devices using Bluetooth technology, the devices have
to be in the line of sight of each other, but when Wi-Fi technology is used the
devices need not be in the line of sight of each other
(d) The statement (a)
and (b) given above are correct in this context
104. What is “Virtual Private Network”?
(a) It is a private
computer network of an organization where the remote users can transmit
encrypted information through the server of the organization
(b) It is a computer
network across a public internet that provides users access to their
organization’s network while maintaining the security of the information
transmitted
(c) It is a computer
network in which users can access a shared pool of computing resources through
a service provider
(d) None of the
statements (a), (b) and (c) given above is a correct description of Virtual
Private Network
105. A new optical disc format known as the Blue-ray
Disc (BD) is becoming popular. In what way is it different from the traditional
DVD?
1. DVD supports Standard Definition video while
BD supports High Definition video.
2. Compare to a DVD, the BD format has several
times more storage capacity.
3. Thickness of BD is 2-4 mm while that of DVD is
1.2 mm.
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
106. Recently, “oilzapper” was in the news. What is
it?
(a) It is an
eco-friendly technology for the remediation of oily sludge and oil spills
(b) It is the latest
technology developed for under-sea oil exploration
(c) It is genetically
engineered high biofuel-yielding maize variety
(d) It is the latest
technology to control the accidentally caused flames from oil wells
107. At present, scientists can determine the
arrangement or relative positions of genes or DNA sequences on a chromosome.
How does this knowledge benefit us?
1. It is possible to know the pedigree of
livestock
2. It is possible to understand the causes of all
human diseases.
3. It is possible to develop disease resistant
animal breeds.
Which of the
statement(s) given above is/are correct?
(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
108. Microbial fuel cells are considered a source of
sustainable energy. Why?
1. They use living organisms as catalysts to
generate electricity from certain substrates.
2. They use a variety of inorganic materials as
substrates.
3. They can be installed in waste water treatment
plants to cleanse water and produce electricity.
Which of the
statement(s) given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
109. A genetically engineered form of brinjal, known
as the Bt brinjal, has been developed. The objective of this is
(a) To make it
pest-resistant
(b) To improve its
taste and nutritive qualities
(c) To make it
drought-resistant
(d) To make its
shelf-life longer
110. The function of heavy water in a nuclear
reactor is to
(a) Slow down the
speed of neutrons
(b) Increase the speed
of neutrons
(c) Cool down the
reactor
(d) Both (a) and (c)
111. An artificial satellite orbiting around the
Earth does not fall down. This is so because the attraction of Earth
(a) does not exist at
such distance
(b) is neutralized by
the attraction of the moon
(c) provides the
necessary speed for its steady motion
(d) provides the
necessary acceleration for its motion
112. Consider the following:
1. Carbon dioxide
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above
is/are the emission/emissions from coal combustion at thermal power plants?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
113. Satellites used for telecommunication relay are
kept in a geostationary orbit. A satellite is said to be in such as orbit when:
1. The orbit is geosynchronous.
2. The orbit is circular.
3. The orbit lies in the plane of the earth’s
equator.
4. The orbit is at an altitude of 22,236 km.
Select the correct
answer using the codes given below:
(a) 1, 2 and 3 only
(b) 1, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4