(IGP) IAS Pre Paper - 2: GS - Logical Reasoning & Analytical Ability - Assertion & Reason (MCQ -6)

Directions (Q. Nos. 1 to 28) Choose the correct alternative from the following options as given below for the Assertion (A) and Reason (R) given in each of the questions.

(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

1. Assertion (A): Alcohol rather than mercury is used in a thermometer tomeasure a temperature of 60°C.
Reason (R): Alcohol has a lower freezing point than mercury.

2. Assertion (A): Tides indicate the regular and periodic rise and fall in sea level.
Reason (R): Tides are caused by the gravitational pull of the moon and sea level.

3. Assertion (A): Graphite is slippery and used as a lubricant.
Reason (R): Graphite has free electrons.

4. Assertion (A): When common salt is kept open, it absorbsmoisture from the air.
Reason (R): Common salt contains magnesium chloride.

5. Assertion (A): The steam engine was invented by James Watt.
Reason (R): There was a problem of taking out water from floodedmines.

6. Assertion (A): We prefer to wear white clothes in winter.
Reason (R): White clothes are good reflectors of heat.

7. Assertion (A): Earthworms are not good for agriculture.
Reason (R):Earthworms break down the soil into fine particles andmake is soft.

8. Assertion (A): Mercury is the farthest planet from the sun.
Reason (R): Mercury is the smallest planet in the entire solar-system.

9. Assertion (A): Red-green colour blindness occurs with more frequency in males than in females.
Reason (R): Females have two chromosomes and males have one.

10. Assertion (A): Indus Valley people knewthat art of navigation.
Reason (R): Indus Valley seals indicate prevalence of overseas trade.

11. Assertion (A): A person with blood group-O is supposed to be an universal Donor.
Reason (R): Group-O does not contain any antigens.

12. Assertion (A): Most of the Himalayan rivers are perennial.
Reason (R): They are fed by melting snow.

13. Assertion (A): An iron ball floats on mercury but gets immersed in water.
Reason (R): The specific gravity of iron is more than that of mercury.

14. Assertion (A): Noise pollution is an unwanted accumulation of noise in the atmosphere.
Reason (R): It interferes with communication.

15. Assertion (A): Akbar found Din-e-Illahi.
Reason (R): He was motivated by self glorification.

16. Assertion (A): Safety fuses are made up of materials having a low melting point.
Reason (R): Safety fuses should be resistant to electric current.

17. Assertion (A): Milk production in India is high as compared to other countries of the world.
Reason (R): The animal rearers in India are poor.

18. Assertion (A): Sprouting should not be done before consuming the grains.
Reason (R): Sprouting increase many vital vitamins.

19. Assertion (A): Goitre is a common disease in mountaineous regions.
Reason (R): The diet of the people in mountains lacks content.

20. Assertion (A): Roughage prevents constipation.
Reason (R): Roughage adds bulk to the food.

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