Match the items given in Column I with the items of Column II. Column I Column II (a) Used for road surfacing (i) Black gold (b) Natural gas (ii) Vaseline and candles (c) Petroleum (iii) Bitumen (d) Paraffin wax (iv) CNG

(a) - (iii) Bitumen is a dense, viscous and black substance that is obtained as a residue of a distillation of crude oil. It is a binding agent that is used for road surfacing. (b) - (iv) Natural gas is a fossil fuel which when stored under high pressure gives compressed natural gas (CNG). (c) - (i) Petroleum is called 'black gold' because it helps in producing many commercial products. It is obtained as a dark-coloured liquid known as crude oil. Hence, it is called black gold. d) - (ii) Paraffin wax is a constituent of petroleum which is used in making vaseline, candles, etc. Column I Column II (a) Used for road surfacing (iii) Bitumen (b) Natural gas (iv) CNG (c) Petroleum (i) Black gold (d) Paraffin wax (ii) Vaseline and candles

E M B I B E

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>VERY SHORT ANSWER QUESTIONS>Q 19

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8th CBSE

IMPORTANT

Earn 100

CNG is less polluting fuel than petrol and diesel.

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Important Questions on Coal and Petroleum

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8th CBSE

IMPORTANT

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>SHORT ANSWER QUESTIONS>Q 20

Sunlight and air are inexhaustible natural resources. Comment.

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8th CBSE

IMPORTANT

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>SHORT ANSWER QUESTIONS>Q 21

Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.

air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen.

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8th CBSE

IMPORTANT

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>SHORT ANSWER QUESTIONS>Q 22

Write two important uses of coke.

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IMPORTANT

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>SHORT ANSWER QUESTIONS>Q 23

Write the characteristics and some important uses of coal.

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8th CBSE

IMPORTANT

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>SHORT ANSWER QUESTIONS>Q 24

Look at Fig. 5.1 where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer?

Question Image

Fig. 5.1

HARD

8th CBSE

IMPORTANT

NCERT Exemplar Science - Class 8>Chapter 5 - Coal and Petroleum>SHORT ANSWER QUESTIONS>Q 26

Match the items given in Column I with the items of Column II.

Column I	Column II
(a) Used for road surfacing	(i) Black gold
(b) Natural gas	(ii) Vaseline and candles
(c) Petroleum	(iii) Bitumen
(d) Paraffin wax	(iv) CNG