In hydrogen peroxide (H2O2), the proportion of hydrogen and oxygen by mass is :(a) 1 : 8 (b) 1 : 16 (c) 8 : 1 (d) 16 : 1
Correct Answer: (b) 1 : 16
Explanation: In hydrogen peroxide, the ratio of hydrogen to oxygen is 1:16 by mass.
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