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Q.

The volume of 20V−H2O2 solution, required to prepare 5 liters of oxygen at S.T.P is

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a

125 ml

b

250 ml

c

100 ml

d

50 ml

answer is B.

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Detailed Solution

20V of H2O2 means 1 lit volume of  H2O - - - - - 20 Lit of O2--------- 5 lit of O2Volume of H2O=520=14=0.25lit=250ml
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