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Chemistry · PYQ NEET UG 2025

हिन्दी

If the half-life \( (t_{1/2}) \) for a first order reaction is \( 1 \) minute, then the time required for \( 99.9\% \) completion of the reaction is closest to :

  1. A
    2 minutes
  2. B
    4 minutes
  3. C
    5 minutes
  4. D
    10 minutes
View Answer & Solution

Correct answer · Option D

10 minutes

Explanation

For a first order reaction, \( t_{99.9\%} = 10 \times t_{1/2} = 10 \times 1 = 10 \) minutes.
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