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CBSE Class 12 · 2024 · Chemical KineticsMultiple Choice

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Assertion (A): The units of the rate constant of a zero order reaction and of the rate of reaction are the same.
Reason (R): In a zero order reaction, the rate of reaction is independent of the concentration of the reactants.
  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).✓ Correct
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
  3. (C)Assertion (A) is true, but Reason (R) is false.
  4. (D)Assertion (A) is false, but Reason (R) is true.

Answer: (A)

Solution

For zero order, rate — the rate is independent of concentration (R is true), and because rate and are equal, they share the same units, mol L s (A is true).
R is exactly why A holds: option (A).

CBSE Class 12 Board · 2024 · Single correct option

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