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CBSE Class 8 Science Worksheet

Coal and Petroleum

1.
State True or false: Calorific value of LPG is more than that of petrol.
A) true B) false
2.
Which gas is released due to incomplete combustion?
A) Carbon dioxide B) Carbon monoxide C) Nitrogen dioxide D) Sulphur dioxide
3.
Choose the correct answer: The petroleum product used in electric generators is _________.
A) Petrol B) Paraffin wax C) Diesel D) Kerosene
4.
Expand PCRA.
5.
Fill in the blanks: The slow process of conversion of dead vegetation into coal is called _____________.
6.
State True or false: Fossil fuels can be made in the laboratory.
A) true B) false
7.
Where is natural gas found in India?
8.
Choose the correct answer: The substance which undergoes combustion and is combustible is known as ____________.
A) ash B) fuel C) flame D) None of these
9.
State True or false: Fossil fuels are inexhaustible natural resources.
A) true B) false
10.
Which of them is used as solvent for dry cleaning?
A) Bitumen B) Petrol C) Diesel D) Kerosene
11.
Expand CNG.
12.
Fill in the blanks: The substance which burn in air are called ____________ .
13.
State True or false: Kerosene is not a fossil fuel.
A) true B) false
14.
Which of the following has the highest calorific value?
A) Coal B) Petrol C) CNG D) Hydrogen
15.
Fill in the blanks: Nylon, Polyester and Acrylic are manufactured by _______________.
16.
Why are gaseous fuels preferred to solid in chemical industries?
17.
Choose the correct answer: The characteristic of coal is __________.
A) tough B) porous C) black in colour D) All of these
18.
State True or false: Petroleum is an exhaustible natural resource.
A) true B) false
19.
Choose the correct answer: Coal mainly contains __________.
A) nitrogen B) carbon C) oxygen D) None of these
20.
Choose the correct answer: The petroleum product used for surfacing of roads is ___________.
A) Bitumen B) Paraffin wax C) Petrol D) Kerosene

CBSE Class 8 Science Worksheet

Coal and Petroleum

Answers

1.
Option A
2.
Option B
3.
Option C

4.
Petroleum Conservation Research Association
5.
carbonization
6.
Option B

7.
Tripura, Rajasthan, Maharashtra and Krishna Godavari delta
8.
Option B
9.
Option B
10.
Option B

11.
Compressed Natural Gas
12.
combustible
13.
Option B
14.
Option D

15.
petrochemicals
16.
Because they burn completely liberating large amount of heat and leave no remains as compared to solid fuels.
17.
Option D
18.
Option A
19.
Option B
20.
Option A
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