Question

The statement given below is incorrect. Write the correct statement.

A chemical compound has a variable composition.

Answer 1

Correct statement - A chemical compound has a fixed composition.

• A chemical combination of one or more atoms of the same or different elements in a fixed ratio is known as a compound.
• For example - Sodium chloride $\left(\mathrm{NaCl}\right)$, Water $\left({\mathrm{H}}_2\mathrm{O}\right)$, Sugar $\left({\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}\right)$, etc.
• As in a compound formation elements always combines in a fixed ratio by mass, so their composition remains the same throughout.