Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The total weight of moisture content per volume of air at definite temperature is called absolute humidity. Reason (R): The absolute humidity decreases from oceans to the continents. In the 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:

\[ \boxed{ \begin{aligned} \text{Absolute Humidity} &\rightarrow \text{Mass of Water Vapour per Unit Volume}, \text{Unit} &\rightarrow \mathrm{g/m^3}, \text{Trend} &\rightarrow \text{Decreases from Oceans to Continents}. \end{aligned} } \] Mnemonic: “Absolute = Actual Water Vapour.”

Answer 1

The Correct Option is B

Concept: Absolute humidity is the mass of water vapour present per unit volume of air, usually expressed in \(\mathrm{g/m^3}\). It generally decreases from oceans towards continents because continental interiors receive less moisture.

Step 1: Evaluate Assertion (A). The definition of absolute humidity is correct. \[ \boxed{\text{Assertion (A) is True}} \]

Step 2: Evaluate Reason (R). Absolute humidity generally decreases inland due to decreasing moisture availability. \[ \boxed{\text{Reason (R) is True}} \]

Step 3: Relation between A and R. The reason is true but does not explain the definition of absolute humidity. \[ \boxed{\text{(B)}} \]