R P Goyal and S P Tripathi Solutions for Chapter: Upthrust in Fluids, Archimedes' Principle and Floatation, Exercise 2: EXERCISE–5(B)

Relative density of a substance is expressed by comparing the density of that substance with the density of :

The unit of relative density is :

The density of water at $4^{0}C$ is nearly_____.

The density of copper is $8.83 \mathrm{g} {\mathrm{cm}}^{-3}$. Express it in $\mathrm{kg} {\mathrm{m}}^{-3}$.

The density of iron is $7.8\times {10}^3 \mathrm{kg} {\mathrm{m}}^{-3}$. What is its relative density?

The relative density of silver is $10.8$. Find its density.

Calculate the mass of a body whose volume is $2 {\mathrm{m}}^3$ and relative density is $0.52$.

Calculate the mass of air in a room of dimensions $4.5 \mathrm{m} \mathrm{x} 3.5 \mathrm{m} \mathrm{x} 2.5 \mathrm{m}$ if the density of air at N.T.P. is $1.3 \mathrm{kg} {\mathrm{m}}^{-3}$.