CUET · CHEMISTRY · PYQ PAPER 2025
75% of a first order reaction was completed in 16 minutes. When was it half completed?
(Given: log(0.75) = -0.125, log(0.25) = -0.602)
- A 8 min
- B 12 min
- C 4 min
- D 32 min
Answer & Solution
Correct Answer
(A) 8 min
Step-by-step Solution
Detailed explanation
\(2 \times t_{1/2} = 16 \text{ min}\) \(t_{1/2} = \frac{16 \text{ min}}{2}\) \(t_{1/2} = 8 \text{ min}\)
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