Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?

1

(a)

Minerals

(b)

Water

(c)

Soil

(d)

Plastic

Air is a natural resource and cannot be exhausted by human activities. It is known as inexhaustible natural resource. Which of the following is another inexhaustible natural resource?

1

(a)

Coal

(b)

Petroleum

(c)

Sunlight

(d)

Minerals

The World's first oil well was drilled in :

1

(a)

USSR

(b)

USA

(c)

India

(d)

UK

It was used for street lighting for the first time in London.

1

(a)

Coke

(b)

Coal-tar

(c)

Coal gas

(d)

Petrol

Coal-tar contains about _______ substances:

1

(a)

400

(b)

300

(c)

100

(d)

200

Fossil fuels are __________,____________ and ______________

1

(a)

coal, petroleum, natural gas

Process of separation of different constituents from petroleum is called ____________________ 

1

(a)

refining

Least polluting fuel for vehicle is ___________________

1

(a)

Compressed Natural Gas (CNG)

During the processing of coal to get coke, coal tar and _______ are also obtained.

1

(a)

coal gas

The process of separating the various constituents of petroleum is known as_________.

1

(a)

refining

Kerosene is not a fossil fuel.

1

(a) True

(b) False

Oxygen in air is an exhaustible natural resource

1

(a) True

(b) False

Resources which are present in unlimited quantity in nature are called exhaustible natural resources.

1

(a) True

(b) False

Wildlife is an exhaustible natural resource.

1

(a) False

(b) True

Under high temperature and pressure, dead plants get slowly converted to coal.

1

(a) False

(b) True

Nutsgilh is an example of inexhaustible natural resources.

1

(a)

Sunlight.

What are fossil fuels?

1

(a)

Some exhaustible natural resources are formed from the dead remains of living organisms. Hence, these are all known as fossil fuels. 

What happens when coal is heated in air?

1

(a)

When coal gets heated in air, it burns and produces mainly carbon dioxide gas.

Name some useful products obtained from coal when it is processed in industry.

1

(a)

Coal is processed in industry to get some useful products such as coke, coal-tar and coal gas.

Write one use of coal.

1

(a)

Coal is used in thermal power plants to produce electricity.