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Reasoning Aptitude

ASSERTION AND REASON MCQs

Assertion And Reason

Total Questions : 239 | Page 8 of 24 pages
Question 71.

choose the correct alternative from the following :

Assertion (A) : We prefer to wear white clothes in winter.

Reason (R) : White clothes are good reflectors of heat.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option D. -> A is false but R is true.

We prefer to wear dark clothes in winter because they absorb the heat and keep the

body warm. However, white clothes are good reflectors of heat and are worn in summer.


Question 72.

choose the correct alternative from the following :

Assertion (A) : Bronze is used for making statues.

Reason (R) : Bronze is an alloy of copper and tin.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option B. -> Both A and R are true but R is NOT the correct explanation of A.

Bronze is an alloy of copper and tin. is resistant to corrosion and so it is used to

make statues.


Question 73.

choose the correct alternative from the following :

Assertion (A) : The use of chlorofluoro carbons is banned throughout the world nowadays.

Reason (R) : These chemicals cause skin cancer.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option C. -> A is true but R is false.

The use of chlorofluoro carbons is banned nowadays because these cause holes in

the ozone layer through which ultraviolet rays penetrate and may cause skin cancer.


Question 74.

choose the correct alternative from the following :

Assertion (A) : India is facing the problem of inflation.

Reason (R) : We have failed to check the growth of black money.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option A. -> Both A and R are true and R is the correct explanation of A

Inflation in India is caused by unrestricted growth of black money.


Question 75.

choose the correct alternative from the following :

Assertion (A) : Leaves of plants are green.

Reason (R) : Plants contain chromoplasts, the green pigment.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option C. -> A is true but R is false.

Leaves of plants are green because they contain the green pigment, chlorophyll.

However, plants contain chromoplasts but they arc not green pigments.


Question 76.

choose the correct alternative from the following :

Assertion (A) : Plaster of Paris is used by doctors for setting fractured bones.

Reason (R) : When Plaster of Paris is mixed with water and applied around the fractured limbs, it sets

into a hard mass.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option A. -> Both A and R are true and R is the correct explanation of A

Plaster of Paris when mixed with water and applied around the fractured limbs, it

sets into a hard mass and keeps the bone joints in a fixed position. So, it can be

used for setting fractured bones.


Question 77.

choose the correct alternative from the following :

Assertion (A) : Amoebiasis is an occupational disease.

Reason (R) : Amoebiasis is caused by inhalation of asbestos dust.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option E. -> Both A and R are false.

Amoebiasis is a microbial disease, caused by protozoa.


Question 78.

choose the correct alternative from the following :

Assertion (A) : When a body is dipped in a liquid fully or partially, there is a decrease in its weight.

Reason (R) :  The decrease in weight is due to the higher density of the displaced liquid.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option C. -> A is true but R is false.

 When a body is dipped in a liquid, there is a decrease in weight due to the upward

thrust exerted on it by the water.


Question 79.

choose the correct alternative from the following :

Assertion (A) : Most of the Himalayan rivers are perennial.

Reason (R) : They are fed by melting snow.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option A. -> Both A and R are true and R is the correct explanation of A

Most Himalayan rivers originating in Himalayan peaks are perennial because they

are fed by the melting snow throughout the year.


Question 80.

choose the correct alternative from the following :

Assertion (A) : Baking soda creates acidity in the stomach.

Reason (R) : Baking soda is alkaline.


  1.    Both A and R are true and R is the correct explanation of A
  2.    Both A and R are true but R is NOT the correct explanation of A.
  3.    A is true but R is false.
  4.    A is false but R is true.
  5.    Both A and R are false.
 Discuss Question
Answer: Option D. -> A is false but R is true.

Baking soda, being alkaline, neutralises the acidity in the stomach and removes it


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