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Reasoning Aptitude

ASSERTION AND REASON MCQs

Assertion And Reason

Total Questions : 239 | Page 2 of 24 pages
Question 11.

  • Assertion (A):

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



  • Reason (R):

  • The earth absorbs the Sun's rays.

  1.    If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  2.    If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  3.    If 'A' is true but 'R' is false
  4.    If 'A' is false but 'R' is true
  5.    If both 'A' and 'R' are false
 Discuss Question
Answer: Option C. -> If 'A' is true but 'R' is false
Answer: (c)
Inside the Earth, the high temperature and pressure keep the metals in a molten state.
The Earth does not absorb the Sun's rays but reflects them.
Question 12.

  • Assertion (A):

  • Graphite is slippery and used as a lubricant.



  • Reason (R):

  • Graphite has free electrons.

  1.    If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  2.    If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  3.    If 'A' is true but 'R' is false
  4.    If 'A' is false but 'R' is true
  5.    If both 'A' and 'R' are false
 Discuss Question
Answer: Option B. -> If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
Answer: (b)
Graphite possesses a layer structure with two successive layers held by weak forces.
Because of such weak forces, these layers are able to slide over one another. Therefore, graphite is slippery and because of this property, it is used as a lubricant.
Question 13.

  • Assertion (A):

  • We prefer to wear white clothes in winter.



  • Reason (R):

  • White clothes are good reflectors of heat.


  1.    If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  2.    If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  3.    If 'A' is true but 'R' is false
  4.    If 'A' is false but 'R' is true
  5.    If both 'A' and 'R' are false
 Discuss Question
Answer: Option D. -> If 'A' is false but 'R' is true
Answer: (d)
We prefer to wear dark clothes in winter as they absorb the heat and keep the body warm.
However, white clothes are good reflectors of heat and are warm in summer.
Question 14.

  • Assertion (A):

  • Ashoka pillars have retained their gloss on their surface.



  • Reason (R):

  • Moisture-laden winds do not blow in the areas where it is located.


  1.    If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  2.    If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  3.    If 'A' is true but 'R' is false
  4.    If 'A' is false but 'R' is true
  5.    If both 'A' and 'R' are false
 Discuss Question
Answer: Option C. -> If 'A' is true but 'R' is false
Answer: (c)
Because of superior quality material being used, Ashoka pillars have retained their gloss on their surfaces.
Hence, R is completely false.
Question 15.

  • Assertion (A):

  • British sovereignty continued to exist in India.



  • Reason (R):

  • The British sovereign appointed the last Governor-General of free India.

  1.    If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  2.    If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  3.    If 'A' is true but 'R' is false
  4.    If 'A' is false but 'R' is true
  5.    If both 'A' and 'R' are false
 Discuss Question
Answer: Option B. -> If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
Answer: (b)
India drafted its own constitution and formed its own government after gaining independence.
Hence, A is false but R is true.
Question 16.

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):

  • The use of chlorofluorocarbons 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 are false.
 Discuss Question
Answer: Option C. -> A is true but R is false.
Answer: (c)
The use of chlorofluorocarbons is banned nowadays because these cause holes in the ozone layer through which ultraviolet rays penetrate and may cause skin cancer.
Question 17.

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):

  • On the equinoxes, the day and night are equal all over the globe.



  • Reason (R):

  • On the equinoxes, the position of the earth with respect to the sun is such that neither pole is inclined towards the sun.

  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)
R fully and clearly explains A.
Question 18.

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):

  • Eskimos reside in igloos.



  • Reason (R):

  • No other material except snow is available.

  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)
Eskimos live in snow houses called igloos because snow, being a bad conductor of heat, these houses are warm inside.
Question 19.

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):

  • Mercury is the farthest planet from the Sun.



  • Reason (R):

  • Mercury is the smallest planet in the entire solar system.

  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 D. -> A is false but R is true.
Answer: (d)
Mercury is the smallest planet, but Pluto is the farthest planet in the solar system.
Question 20.

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):

  • Areas near the Equator receive rainfall throughout the year.



  • Reason (R):

  • High temperatures and high humidity cause conventional rain in most afternoons near the Equator.

  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)
R is the correct explanation of A.

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