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Reasoning Aptitude

ASSERTION AND REASON MCQs

Assertion And Reason

Total Questions : 239 | Page 24 of 24 pages
Question 231.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and R are false.



  • Assertion (A):

  • We feel comfortable in a hot and humid climate.



  • Reason (R):

  • Sweat evaporates faster in a humid climate.

  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.
Answer: (e)
We feel uncomfortable in hot and humid climate because, in hot weather, the body sweats more but due to high humidity, this sweat does not evaporate easily.
Question 232.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and R are false.



  • Assertion (A):

  • Seeds should be treated with fungicide before being sown.



  • Reason (R):

  • Seeds do not germinate unless treated with a fungicide solution.

  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.
Answer: (c)
Seeds are treated with fungicides before sowing to avoid seed-borne diseases. However, seeds may germinate, even if not treated with a fungicide solution.
Question 233.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and R are false.



  • Assertion (A):

  • Ventilators are provided near the roof.



  • Reason (R):

  • Conduction takes place better near the roof.

  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.
Answer: (c)
Ventilators are provided near the roof as the air upon heating, rises and so can be thrown out of a room through high ventilators.
Question 234.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and R are false.



  • Assertion (A):

  • No food material normally enters the windpipe during swallowing.



  • Reason (R):

  • When we swallow, the back portion of our tongue covers the opening of the windpipe.

  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.
Answer: (a)
R explains A fully.
Question 235.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and are false.



  • Assertion (A):

  • A ship rises as it enters the sea from a river.



  • Reason (R):

  • The density of seawater is higher as compared to river water.

  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 are false.
 Discuss Question
Answer: Option A. -> Both A and R are true and R is the correct explanation of A.
Answer: (a)
Due to the higher density of sea water, the upthrust produced by the sea water on the ship is greater as compared to that produced by river water.
Question 236.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and are false.



  • Assertion (A):

  • Alcohol rather than mercury is used in a thermometer to measure a temperature of -60°C.



  • Reason (R):

  • Alcohol has a lower freezing point than mercury.

  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 are false.
 Discuss Question
Answer: Option A. -> Both A and R are true and R is the correct explanation of A.
Answer: (a)
Mercury freezes at -39°C, while alcohol freezes at a point far below - 100°C. So, alcohol is used to measure lower temperatures.
Similarly, mercury boils at 357°C, while alcohol boils at 78°C. So, mercury is used to measure high temperatures.
Question 237.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and are false.



  • Assertion (A):

  • Clothes are not washed properly in hot water.



  • Reason (R):

  • Hard water contains many minerals.

  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 are false.
 Discuss Question
Answer: Option B. -> Both A and R are true but R is not the correct explanation of A.
Answer: (b)
Clothes are not washed properly in hard water because it does not form lather with soap. However, it is true that hard water contains many minerals.
Question 238.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and are false.



  • Assertion (A):

  • Inside the earth, metals are present in a molten state.



  • Reason (R):

  • The earth absorbs the sun's rays.

  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 are false.
 Discuss Question
Answer: Option C. -> A is true but R is false.
Answer: (c)
Inside the earth, the high temperature and pressure sure keep the metals in a molten state. The earth does not absorb the sun's rays but reflects them.
Question 239.

Directions: In each of the questions given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided below: (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. (e) Both A and are false.



  • 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 are false.
 Discuss Question
Answer: Option A. -> Both A and R are true and R is the correct explanation of A.
Answer: (a)
Plaster of Paris when mixed with water and applied around the fractured limbs, sets into a hard mass and keeps the bone joints in a fixed position.
So, it can be used for setting fractured bones.

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