ICSE ICSE Class 8 - CISCE Question Bank Solutions for Physics

A body sinks in a liquid A but floats in a liquid B. The density of liquid A is ....... than the density of liquid B.

A body X sinks in water, but a body Y floats on water. The density of the body X is ......... than the density of body Y.

The buoyant force experienced by a body when floating in saltwater is ....... to or same that of when floating in pure water.

The weight of a body floating in a liquid is ........

The relative density of alcohol is 0.8. Its density is

The density of aluminium is 2.7 g cm-3 and that of brass 8.4 g cm’3. The correct statement is

A piece of wood floats on water. The buoyant force on wood will be

The weight of a body is more than the buoyant force experienced by it, due to a liquid. The body will

Define the term Density of a substance.

Name the S.I. unit of density. How is it related to g Cm^-3?

The density of brass is 8.4 g cm-3. What do you mean by this statement?

Describe an experiment to determine the density of the material of a coin.

What is a density bottle? How is it used to find the density of a liquid?

Define the term relative density of a substance.

What is the unit of relative density?

Distinguish between density and relative density.

Explain the meaning of the statement

‘Relative density of aluminium is 2.7’.

How does the density of a body and that of a liquid determine whether the body will float or sink into that liquid?

A cork piece floats on water surface while an iron nail sinks in it. Explain the reason.

Which of the following will sink or float on water? (Density of water = 1 g Cm^-3)
(a) body A having density of 500 kg m^-3