Question

The mass ratio of hydrogen to oxygen in water is :

• A. 1:8
• B. 8:1
• C. 2:3
• D. 3:2

Answer 1

The correct option is A

1:8

The chemical formula of water is $H_{2}O$. Here,
Mass of hydrogen atom = 2u
Mass of oxygen atom = 16u
Therefore, the mass ratio of hydrogen to oxygen $=\frac{2}{16}=\frac{1}{8}=1:8$