The correct option is: (b) 8.4
Explanation:
Normality (N) = 1.5
We know that equivalent weight of H2O2 is 17 and strength of H2O2 = Normality x Equivalent weight
Since 68 grams of H2O2 produces 22.4 litres oxygen at NTP, therefore 25.5 grams of H2O2 will produce
= 22.4/68 x 25.5 = 8.4 litre of oxygen
Thus, volume strength of given H2O2 solution is 8.4.