Multiple choice

Directions: There are two statements, one labeled the Assertion (A) and the other labeled the Reason (R). Examine the statements and decide if the Assertion A and Reason R are individually true and if so, whether the reason is the correct explanation of the assertion. Select your answers to the question from the codes given below:

Assertion (A): Ventilators should always be provided near ceilings. Reason (R): Fresh air becomes warmer when polluted.

  1. Both A and R are true and R is the correct explanation of A.

  2. Both A and R are true and R is not the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Warm air is less dense and rises, so ventilators near the ceiling allow it to escape. The reason is true, but it explains the assertion because warm air (which carries pollutants) rises to the top.

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