Class 5 Science Chapter 4 Test 1

Which one of the following acts causes most of the air pollution?

The greenhouse is _______ inside even in winter season.

In green house:

Pollutant gases in air combine together in presence of sunlight and produce _______.

There are _______ types of environmental pollution.

The germs present in it caused typhoid;

Carbon dioxide, methane, nitrogen oxide, etc. are called _______ gases.

_______ were formed from the buried remains of plants and animals.

The poisonous substances emitting form the chimney of the factories and smoke after dissolving in rain water produces _______ rain.

Which of the following is not a greenhouse gas?

The green houses gases allow the sunlight to reach the Earth, but does not allow leaving the heat of the Earth, this process is called _______ effect.

The invisibility in winter is due to _______.

_______ gases are considered fossil fuel.

Any change in the environment which is harmful for living thing is called environmental _______.

The matter that could not break down into simple substances by natural process is called _______materials.

Which disease is caused due to air pollution?

The particular place where an organism lives is called its _______.

Which one of these is non-biodegradable?

The substances that cause pollution are called _______.

The increase in the average temperature of the Earth is called _______ warming.

Such matters which become part of the soil after broken down by natural process into simple substances are called _______ materials. (Meat, paper, etc).

Greenhouse is a house made of _______ material.

To reduce pollution of non-biodegradable things the principle of _______ is applied.