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Chemistry · Some Basic Concepts of Chemistry

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): One mole of any gas always occupies \( 22.4\text{ L} \) volume at all temperatures and pressures. Reason (R): Volume of a gas depends inversely on pressure and directly on temperature. In the light of the above statements, choose the correct answer from the options given below:

  1. A
    (A) is false but (R) is true.
  2. B
    Both (A) and (R) are true and (R) is the correct explanation of (A).
  3. C
    Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  4. D
    (A) is true but (R) is false.

Correct answer · Option A

(A) is false but (R) is true.

Explanation

\( 22.4\text{ L} \) is valid specifically at STP (0°C, 1 bar or 1 atm), not at *all* temperatures and pressures. Thus Assertion is false, Reason is true.
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