Question

What happens to the density of a fluid (except for water) on increasing the temperature?

• A. It first increases then decreases
• B. It remains the same
• C. It increases
• D. It decreases

Answer 1

The correct option is D It decreases

Density is the ratio of mass to the volume of a substance.

$\text{Density}=\frac{\text{Mass}}{\text{Volume}}$

Density is inversely proportional to volume. On increasing the temperature, the volume of fluid increases. Hence, the density decreases.