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

Correct answer · Option 1

(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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