ICSE ICSE Class 7 - CISCE Question Bank Solutions

Define the term density of a substance.

Arrange the following substances in order of their increasing density:
(a) iron
(b) cork
(c) brass
(d) water
(e) mercury

How does the density of water changes when  it is heated from 0°C to 4°C,

How does the density of water changes when it is heated from 4°C to 10°C ?

Explain the meaning of the term speed.

A car travels with a speed 12 m s”1, while a scooter travels with a speed 36 km h-1. Which of the two travels faster ?

The length, breadth and height of a water tank are 5 m, 2.5 m and 1.25 m respectively. Calculate the capacity of the water tank in (a) m³ (b) litre.

A solid silver piece is immersed in water contained in a measuring cylinder. The level of water rises from 50 ml to 62 ml. Find the volume of silver piece.

Find the volume of a liquid present in a dish of dimensions 10 cm x 10 cm x 5 cm.

A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.

A piece of brass of volume 30 cm³ has a mass of 252 g. Find the density of brass in (i) g cm^-3, (ii) kg m^-3.

A block of iron has dimensions 2 m × 0.5 m × 0.25 m. The density of iron is 7.8 g cm⁻³. Find the mass of block.

The density of copper is 8.9 g cm^-3. What will be its density in kg m^-3 ?

A car travels a distance of 15 km in 20 minute. Find the speed of the car in km h^-1.

A car travels a distance of 15 km in 20 minute. Find the speed of the car in m s^-1.

How long a train will take to travel a distance of 200 km with a speed of 60 km h^-1 ?

A boy travels with a speed of 10 m s^-1 for 30 minute. How much distance does he travel ?

Express 36 km h^-1 in m s^-1

Express 15 m s^-1 in km h^-1.

Write true or false of the following statement.

There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.