Prelims MCQs Quiz 11 : Science


1. If both husband and wife have blood group A, then their child cannot have which of the following blood group?
a) A
b) O
c) AB
d) None

Answer & Explanation

2. Biodigester toilets are hailed as a solution to many of our problems. Which of the following about biodigester toilets is correct?
1. they use aerobic bacteria
2. they require no or very low maintenance
3. the use less water
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 3

Answer & Explanation

3. With reference to free radicals, consider the following statements :
1. they are released as a result of oxidation in body cells
2. they are useful for the body
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

Answer & Explanation

4. Which of these increases High Density Lipoprotein (HDL) in he body?
1. coconut oils
2. omega 3 fatty acids
3. trans fats
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 3

Answer & Explanation

5. Various vitamin deficiency causes different diseases. In this regard which of the following pairs are correctly matched?
1. niacin : cheliosis
2. thiamine : pellagra
3. retinol : xerophthalmia
Select the correct answer using the codes given below.
a) 1 only
b) 2 only
c) 3 only
d) None

Answer & Explanation

6. Consider the following statements about antimicrobial resistance :
1. It is a natural phenomena.
2. Indiscriminate use of antibiotics leads to antimicrobial resistance.
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

Answer & Explanation

7. Which of the these technologies requires line of sight for communication?
1. bluetooth
2. wi-fi
3. near field communication
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 3 only
c) 1 and 3 only
d) None

Answer & Explanation

8. Scattering of light explains :
1. blue colour of sky
2. colour of oil fins
3. rainbow
Select the correct answer using the codes given below.
a) 1 only
b) 1 and 2 only
c) 1and 3 only
d) None

Answer & Explanation

9. Consider the following statements about difference between Genetically Modified Organisms ( GMOs) & Living modified organisms (LMOs) :

1.GMOs means organisms which are not capable of growing, i.e. are dead.
2. LMOs means organisms which are capable of growing.
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

Answer & Explanation

10. Neutrinos are one of the fundamental particles. Which of the following about neutrinos is/are correct?
1. they are chargeless
2. they have no mass
3. they travel nearly at the speed of light
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 3

Answer & Explanation

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Please read these important articles about prelims preparation

1. How UPSC asks current affairs in GS Prelims

2. How to practice prelims MCQs for UPSC

3. Applying logic in UPSC General Studies Prelims

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