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Reasoning Aptitude

ASSERTION AND REASON MCQs

Assertion And Reason

Total Questions : 239 | Page 7 of 24 pages
Question 61.

choose the correct alternative from the following :

Assertion (A) : Telephone wires sag more in summer.

Reason (R) : They expand due to summer 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 A. -> Both A and R are true and R is the correct explanation of A.

The metal of telephone wires expands in summer and the wires become loose. So,

they sag.


Question 62.

choose the correct alternative from the following :

Assertion (A) : Weeds should not be allowed to grow along with the crops.

Reason (R) : Weeds leave no space for plants to grow.


  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.

Weeds should not be allowed to grow along with the crops bccause they consume

the plant nutrients.


Question 63.

choose the correct alternative from the following :

Assertion (A) : Carbon dioxide turns lime water milky.

Reason (R) : Carbon dioxide sullies the 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 R are false.
 Discuss Question
Answer: Option C. -> A is true but R is false.

Carbon dioxide reacts with lime water (calcium hydroxide) to form milky precipitate

of calcium carbonate


Question 64.

choose the correct alternative from the following :

Assertion (A) : Diamond is used for cutting glass.

Reason (R) : Diamond has a high refractive index.


  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.

Diamond is very hard due to its rigid three dimensional structure and so, it is used

for cutting glass.

Refractive index of diamond is high and gives it the greater transparency and brilliance.


Question 65.

choose the correct alternative from the following :

Assertion (A) : Mohammad-bin-Tughluq is called the "wisest fool'.

Reason (R) : He had wise plans but implemented them foolishly.


  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

 R provides the correct explanation of A.


Question 66.

choose the correct alternative from the following :

Assertion (A) : We feel comfortable in hot and humid climate.

Reason (R) : Sweat evaporates faster in 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.

We feel uncomfortable in hot and humid climate because in hot weather, body sweats

more but due to high humidity, this sweat does not evaporate easily.


Question 67.

choose the correct alternative from the following :

Assertion (A) : Land breeze blows during night.

Reason (R) : Land gets heated up quickly.


  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.

 Land gets heated up quickly and also cools quicker than sea at night so that cool

winds called the land breeze blow from land to sea.


Question 68.

choose the correct alternative from the following :

Assertion (A) : Simla is colder than Delhi.

Reason (R) : Simla is at a higher altitude as compared to Delhi.


  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

Simla is colder than Delhi because it is situated at a higher altitude and temperature

decreases by `1^circ`C for every 165 metres of ascent


Question 69.

choose the correct alternative from the following :

Assertion (A) : The freezing of sea water during winter does not kill the fishes.

Reason (R) : Only surface water is frozen.


  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

In winter, only the surface water of the sea freezes Further below, water docs not

freeze because the surface ice provides an insulating coat.


Question 70.

choose the correct alternative from the following :

Assertion (A) : Leakages in household gas cylinders can be detected.

Reason (R) : LPG has a strong smell.


  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.

Leakages in household gas cylinders can be detected because of the strong smell of

ethyl merceptan mixed with LPG.


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