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Question

One ml of H2O2 solution gives 50 ml of O2 at NTP, so it is:
  1. 10 vol
  2. 25 vol
  3. 50 vol
  4. 100 vol

A
100 vol
B
10 vol
C
50 vol
D
25 vol
Solution
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1 ml of hydrogen peroxide gives 50 ml of oxygen at NTP means, 50 volume hydrogen peroxide.

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