Pollution grade 6 igcse-Apoorva

What is pollution?

• Saving the environment

• Destroying forests

• adding useful substances to the environment

• Adding harmful substances to the environment

• Growing trees

Identify the kind of pollution shown in the given picture.

• Water pollution

• Air pollution

• Land pollution

• Noise pollution

Why is it essential to have a proper sewage system?

• To use it for agriculture purposes

• To treat the sewage to make it safe

• To use it for constructional purposes

• To enhance contamination of water

Identify the kind of pollution shown in the give figure

• Air pollution

• Water pollution

• Land pollution

• Soil pollution

Human activities add _________ to the air. This is called air pollution.

Burning of fuels releases gases like

• oxygen

• methane

• carbondioxide

• sulphur

Apart from carbondioxide what kind of gas is released when coal is burnt?

• Methane

• Sulphur dioxide

• Sulphur monoxide

• None

What is acid rain?

• Rain that makes the water turn black in color

• Rain that contains carbon dioxide

• Rain that has been made acidic by certain pollutants in the air.

• Rain that is unfit to use for agricultural purposes

What are the pollutants that lead to acid rain?

• Zinc oxide and sulphuric acid

• Sodium chloride and water

• carbondioxide and carbon monoxide

• Sulphur dioxide, Hydrochloric acid and nitric acid

Harmful effect of acid rain is ___________