Question

Assertion (A): In heating and dehumidification of air, relative humidity of air decreases.
Reason (R): Sensible heating causes enthalpy to decrease.
In light of the above statements, choose the correct answer from the options given 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

Hint:

Enthalpy increases during sensible heating and relative humidity decreases during dehumidification

Answer 1

The Correct Option is D

During air heating and dehumidification, relative humidity decreases due to the removal of water vapor. Sensible heating unequivocally increases enthalpy and is not associated with an enthalpy reduction.