20 volume `H_(2)O_(2)` solution has a strength of aboutA. `30%`B. `6%`

1.	20 volume `H_(2)O_(2)` solution has a strength of aboutA. `30%`B. `6%`C. `3%`D. `10%`.
Answer» Correct Answer - B 20 volumes of `H_(2)O_(2)` means 20 litres of oxygen is obtained at STP by the decomposition of 1 litre `H_(2)O_(2)` solution `{:(2H_(2)O_(2),to,2H_(2)O+,O_(2)),(2 "mole",,,1 "mole"),(68 g,,,224 "litre at" STP):}` `224` litres oxygen is obtained from 68 g `H_(2)O_(2)` `:.` 20 litres oxygen is obtained from `=(68)/(224)xx20=607 g H_(2)O_(2)` `:.` 1000 ml of `H_(2)O` solution contains `607` g `H_(2)O_(2)` 100 ml `(~~100 g)` solution contains `(607)/(1000)xx100` `:.` Strength of `H_(2)O_(2)` solution `=607 g H_(2)O_(2)=607%`

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20 volume `H_(2)O_(2)` solution has a strength of aboutA. `30%`B. `6%`C. `3%`D. `10%`.

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