Question

If a sample of metal weighs 210 gm in air, 180 gm in water and 120 gm in a liquid:

• A. Relative density of metal is 3
• B. Relative density of metal is 7
• C. Relative density of liquid is 10
• D. Relative density of liquid is $\frac{1}{3}$

Answer 1

The correct option is B

Relative density of metal is 7

$\text{Relative density of metal}=\frac{210}{210-180}=7$

$\text{Relative density of liquid}=\frac{210-120}{210-180}=3$