Question

Carbohydrates contain hydrogen and oxygen atoms in the ratio of

• A. $1:1$
• B. $2:1$
• C. $2:3$
• D. $1:2$

Answer 1

The correct option is B $2:1$

Generally the carbohydrates have formula $C_x(H_{2}O{)}_y$
Hence, Ratio of $H$ and $O$ is $2:1$
For example:
Gulcose- $C_6{H}_{12}{O}_6=C_6(H_{2}O{)}_6$. Ratio of $H$ and $O$ is $2:1$
Ribose- $C_5{H}_{10}{O}_5=C_5(H_{2}O{)}_5$. Ratio of $H$ and $O$ is $2:1$
Hence the hydrogen-oxygen ratio in carbohydrates is $2:1$
Thus, (b) is correct.