Question

Find the relative density of petrol.
Given, density of petrol = 800 kg/m3

• A. 80
• B. 8
• C. 0.8
• D. 0.08

Answer 1

The correct option is C 0.8

Relative density is defined as the ratio of the density of a substance to the density of water at 4-degree Celsius.
So, $\frac{\text{Density of petrol}}{\text{Density of water}}=\frac{\text{800 kg/m3}}{\text{1000 kg/m3}}=0.8$