It is customary to indicate the strength of a sample of `H_(2)O_(2)` under specification of volume. The strength of `H_(2)O_(2)` solution can also be in %(w/v) or molarity or normality,"10 Vol `H_(2)O_(2)` solution means I ml of`H_(2)O_(2)` solution decomposes to give 10 ml of `O_(2)` gas at STP. 1 lit of `H_(2)O_(2)` solution decomposes to give 10 lit of `O_(2)` gas at STR.
''30 vol hydrogen peroxide means

Options

A. 30% `H_2O_2` solution
B. `30cm^3` of the solution contains 1g of `H_2O_2`
C. `1 cm^3` of the solution liberated `30cm^3` of `O_2` at STP
D. `30 cm^3` of the solution contain 1 mole of `H_2O_2`

Answer

C

Explanation

30 Vol of `H_2O_2` solution means, 1ml of this solution produces 30 ml of `O_2` at STP