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Question

20 volume $H_{2} O_{2}$ solution has a strength of :
30%
6%
3%
10%

A

30%

B

10%

C

3%

D

6%

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Solution

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$100 %$ strength corresponds to $333.33$ $V$
$%$ strength for $20$ $V = \frac{20}{333.33} \times 100 = 6 %$

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