Assertion and Reason Questions

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion(A) :  The steam engine was invented by James Watt. 

Reason (R)   :  There was a problem of taking out water from flooded mines

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.
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A.

Explanation:

The problem of pumping out water from the flooded mines provided the need of a self working engine, which led James Watt to invent the same. 

 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A) :  Glass tumbler breaks in winter when hot water is poured in it.

Reason (R)    :  When hot water is poured. the outer surface of glass expands.

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.
 
Answer & Explanation Answer: C) A is true but R is false.

Explanation:

When in winter, hot water is poured in the glass tumbler. its inner surface tends to expand while the Outer surface in contact with cold atmosphere does not. This opposite interaction causes the tumbler to break. 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A)  : In India, females have higher life expectancy than the males. 

Reason (R)    : Females receive a better diet. 

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) Both A and R are false.
 
Answer & Explanation Answer: D) Both A and R are false.

Explanation:

In India, due to high birth rate and due to neglect, females have a lower life expectancy than the males and although females need a better diet, they do not receive it. 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A) : Himalayas once laid under the sea. 

Reason (R)    : Fossils of marine creatures are traced on the Himalayas. 

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.
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A.

Explanation:

Himalayas are the young fold mountains that at one time are believed to lie inside the Tethys sea. This is evident from the recovery of fossils of marine creatures on its peaks. 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A) : Inside the earth metals are present in molten state. 

Reason (R)   : Earth absorbs the sun's rays. 

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.
 
Answer & Explanation Answer: C) A is true but R is false.

Explanation:

Inside the earth, the high temperature and pressure keeps the metals in molten state. The earth does not absorb the sun's rays but reflects them. 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A)  :   Red colour of blood is due to haemoglobin. 

Reason (R)     :  Haemoglobin is a red pigment. 

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.
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A.

Explanation:

Haemoglobin is the blood pigment that imparts red colour to the blood. 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion(A)   :   Tamil Nadu gets most of the rainfall in winter. 

Reason (R)     :   Tamil Nadu gets rainfall from retreating monsoons. 

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.
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A.

Explanation:

Rainfall in Tamil Nadu is caused by the retreating monsoons which occur in winter. 

 

 

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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A)  : Shivaji developed the guerilla warfare. 

 Reason (R)    : Shivaji feared the Mughals. 

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.
 
Answer & Explanation Answer: C) A is true but R is false.

Explanation:

 Shivaji initiated the guerilla warfare to defeat the Mughuls but he did not fear them. 

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