Assertion and Reason Questions and Answers

Answer: A

Correct answer: Only RI and not RII is the reason for the assertion.

RI names what actually sells a book: readers care for the subject and enjoy the way it is written. RII is both weaker and doubtful - simple language may widen a readership, but plenty of plainly written books do not sell, so it cannot account for the success on its own. Only RI is the reason.

Answer: D

Hence the given assertion is about the preference of today's youth.

RI is talking about the strong base of western music. Having strong base does not imply that it is good to listen.

RII tells that youth like rocking music but there is no evidence that western music is rocking.\Neither RI nor RII is a reason.

Answer: A

Here the assertion is about the collapse of the newly constructed bridge, which is possible because of faulty construction or because of improper design. Hence, I can be reason.

RII talks about type of soil, which is out of context.

Answer: D

Here in the assertion, we are only talking about the weakness of the employees. RI is giving the reason for skipping breakfast, so it is not the reason. RII is also not a valid reason, as lack of mental exercise may not lead to deterioration.

Answer: C

Correct answer: A is true but R is false.

Pressure-cooker handles really are made of ebonite, so A is true. But the reason is that ebonite is a poor conductor of heat, so the handle stays cool enough to grip - not that it is strong. R is false as a description of the material’s relevant property.

Answer: C

Correct answer: A is true but R is false.

Pluto is indeed the coldest of the bodies traditionally counted as planets, at around \( -230^{\circ}\mathrm{C} \), so A is true. But the cause is its enormous distance from the sun - sunlight there is some 1600 times fainter than at the earth - not the slant of the rays, which is what makes the earth’s poles cold. R is false.

Answer: B

Correct answer: Both A and R are true but R is NOT the correct explanation of A.

Diamond does cut glass and it does have a high refractive index, so both statements are true. But the two have nothing to do with each other: diamond cuts glass because it is the hardest natural substance, while its refractive index is why it sparkles. R does not explain A.

Answer: A

Correct answer: Both A and R are true and R is the correct explanation of A.

Simla is colder than Delhi, and it stands at about 2200 m against Delhi’s 220 m. Air cools by roughly \( 6.5^{\circ}\mathrm{C} \) for every kilometre of ascent, so the altitude difference accounts for the temperature difference directly. Both are true and R explains A.

Answer: C

Correct answer: A is true but R is false.

Eskimos do build igloos of snow, so A is true. But the reason given is wrong: they also use driftwood, whalebone, stone and animal skins, and the igloo is a winter hunting shelter rather than the only thing they can build. R is false.

Answer: D

Correct answer: Both A and R are false.

Both statements are the wrong way round. Bangladesh is one of the world’s great producers of raw jute and exports it; and it is India that holds most of the jute mills, concentrated along the Hooghly. Both A and R are false.