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Q.

For zero order reaction, $t_{1/2}$ is 20 sec. Find the time taken to complete 10% of this reaction ?

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a

2 sec

b

8 sec

c

1 sec

d

4 sec

answer is D.

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Detailed Solution

$Zero order, \frac{x}{t} = \frac{a}{2 t_{1 / 2}},$
$\frac{10}{t} = \frac{100}{2 \times 20}, t = 4 \sec$

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