Question

The volume of $50g$ of a substance is $20c{m}^3$. If the density of water is $1gc{m}^{-3}$, will the substance float or sink?

• A. The substance will sink.
• B. The substance will float.
• C. The substance will neither sink nor float.
• D. It can’t be determined.

Answer 1

The correct option is A The substance will sink.

Since, mass of the substance = $50g$
Its volume = $20c{m}^3$
Density of the substance $=\frac{Mass}{Volume}=\frac{50g}{20c{m}^3}=2.5gc{m}^{-3}$
Since, density of the substance is $2.5gc{m}^{-3}$, its relative density will be $2.5$.
A substance with a relative density greater than $1$, sinks in water.