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Q.

(A) : If in a zero order reaction, the concentration of the reactant is doubled, the half-life period is also doubled.
(R) : For a zero order reaction, the rate of reaction is independent of initial concentration.

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a

Both (A) and (R) are correct but (R) is not the correct explanation of (A).

 

b

(A) is correct but (R) is wrong.

 

c

Both (A) and (R) are correct and (R) is the correct explanation of (A).

 

d

(A) and (R) both are wrong.

answer is B.

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Detailed Solution

  • For a zero order reaction, t1/2=A0/2 K.
    As half life for zero order reaction is directly proportional to initial concentration, hence doubling the concentration of reactant, half life get doubled.
  • For a zero order reaction, the rate of reaction is independent of initial concentration.
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