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Question

What is the ratio by mass of hydrogen and oxygen in water?

This question was previously asked in
SSC Selection Post 2023 Graduation Level Question Paper (30 Jun, 2023) (Shift 1)
The correct answer is

1 : 8

The correct answer is 1 : 8.

As calculated, the mass ratio of hydrogen to oxygen in H₂O is $1 : 8$. This means that for every 1 gram (or kilogram, or pound) of hydrogen in water, there are 8 grams (or kilograms, or pounds) of oxygen. This ratio is constant for pure water, according to the Law of Definite Proportions. Understanding mass ratios is important in stoichiometry, which deals with the quantitative relationships between reactants and products in chemical reactions.

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