Science & Technology mcqs#5
Q 1.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
Ans – c
Q.2 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
Ans – b
Q 3.Which reference to Agni-IV Missile, which of the following statements is/are correct?
1. It is a surface-to-surface missile.
2. It is fuelled by liquid propellant only.
3. It can deliver one-tonne nuclear warheads about 7500 km away.
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
Ans – a
Q 4.With reference to Neem tree, consider the following statements:
1. Neem oil can be used as a pesticide to control the proliferation of some species of insects and mites.
2. Neem seeds are used in the manufacture of biofuels and hospital detergents.
3. Neem oil has applications in pharmaceutical industry.
Which of the statements given above is/are correct?
a.1 and 2 only
b.3 only
c.1 and 3 only
d.1, 2 and 3
Ans – c
Q 5.Which one of the following is the process involved in photosynthesis?
a. Potential energy is released to form free energy
b.energy is converted into potential energy and stored
c.is oxidized to release carbon dioxide and water
d.Oxygen is taken, and carbon dioxide and water vapour are given out
Ans – b
Q 6.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
Ans – d
Q 7.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., 2 and 3
Ans – c
Q 8.Which of the following pair 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 and 2 : Exploring the outer solar system
Select the correct answer using the code given below.
a.1 only
b.and 3 only
c.1 and 3 only
d.1, 2 and 3
Ans – c
Q 9.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. 1,3
Ans – b
Q 10.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. only
b.2 and 3
c.1 and 3
d.None
Ans – b
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