NEET Chemistry (general) MCQ Question
Which of the following statements about the rate constant and half-life of reactions is correct?
For a first-order reaction, the half-life is independent of the initial concentration.
In a zero-order reaction, the rate constant is directly proportional to the half-life.
The half-life of a zero-order reaction is inversely proportional to the initial concentration.
For a first-order reaction, the half-life increases with a decrease in the rate constant.
Correct Answer
Detailed Explanation
For a first-order reaction, the half-life is indeed independent of the initial concentration, as stated in the NCERT context. In contrast, the half-life of a zero-order reaction depends on the initial concentration and is inversely proportional to the rate constant.
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