CBSE Class 8 Science Chapter 3 Coal And Petroleum Question And Answers

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Class 8 Science Chapter 3 Coal And Petroleum Fill In The Blanks

Question 1. Forests and coal are ________ natural resources
Answer: Exhaustible

Question 2. Coal is one of the _______ used to cook food.
Answer: Fuels

Question 3. Sunlight is a _____ natural resource.
Answer: Inexhaustible

Read And Learn More CBSE Class 8 Science Question And Answers

Question 4. Petroleum ____ and _____ are fossil fuels.
Answer: Coal, natural gas

Question 5. The slow process of conversion of dead vegetation into coal is called _____.
Answer: Carbonisation

” Cbse Class 8 Science Chapter 3 Question And Answers “

Question 1. Fossil fuels are________,______ and _______.
Answer: coal, petroleum, natural gas

Question 2. The process of separation of different constituents from petroleum is called _______.
Answer: Refining

Question 3. The least polluting fuel for a vehicle is ______.
Answer: Compressed Natural Gas (CNG)

Question 6. In India, ______ advises people to save petrol and diesel while driving their vehicles
Answer: PCRA (Petroleum Conservation Research Association)

Question 7. The main constituent of natural gas is ______.
Answer: Methane

” Coal And Petroleum Class 8 “

CBSE Class 8 Science Chapter 3 Coal And Petroleum Question And Answers

” Fossil Fuels Class 8 “

CBSE Class 8 Science Chapter 3 Coal And Petroleum True Or False

Question 1. Fossil fuels can be made in the laboratory.
Answer: False, Fossil fuels are made by a natural process.

Question 2. CNG is a more polluting fuel than petrol.
Answer: False, CNG is a clean fuel and less polluting than petrol.

Question 3. Coke is almost a pure form of carbon.
Answer: True

Question 4. Coal tar is a mixture of various substances.
Answer: True

Question 5. Kerosene is not a fossil fuel.
Answer: False, Kerosene is a kind of fossil fuel

Question 6. Resources that are present in unlimited quantities in nature are called nonrenewable natural resources.
Answer: False, Resources that are present in unlimited quantity in nature are called inexhaustible natural resources.

Question 7. Oxygen in the air is an exhaustible natural resource.
Answer: False, Oxygen in the air is an inexhaustible natural resource because it is continuously recycled in the atmosphere.

Question 8. Wildlife is an exhaustible natural resource.
Answer: True

Question 9. CNG is a less polluting fuel than petrol and diesel.
Answer: True

” Formation Of Coal And Petroleum “

Question 10. Under high temperature and pressure, dead plants slowly converted to coal.
Answer: True

Question 11. Bitumen is used for lubrication in vehicles.
Answer: False

Question 12. Coal tar has been used for metalling the roads.
Answer: True

Class 8 Science Chapter 3 Coal And Petroleum Match The Columns

Question 1. Match Column 1 with Column 2

CBSE Class 8 Science Chapter 3 Petroleum Products and Uses Table

Answer: A-3, B-4, C-1, D-2

” Exhaustible And Inexhaustible Resources “

Question 2. Match Column 1 with Column 2

CBSE Class 8 Science Chapter 3 Fuels and Their Characteristics Table

Answer: A-4, B-2, C-1, D-3

Question 10. Match Column 1 with Column 2.

CBSE Class 8 Science Chapter 3 Science Chemistry Coal Applications

Answer: The correct match is A-2, B-1, C-3, D-4

” Carbonisation Process “

CBSE Class 8 Science Chapter 3 Coal And Petroleum Questions And Answers

The following questions consist of two statements: Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

  1. Both A and R are true, and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. A is false, but R is true.

Question 1.

  • Assertion (A) Sunlight is an inexhaustible natural resource.
  • Reason (R) The Sun will continue to radiate energy.

Answer: (1) Both A and R are true, and R is the correct explanation of A.

Question 2.

  1. Assertion (A) Kerosene is used in jet aircraft.
  2. Reason (R) Kerosene is not a fossil fuel.

Answer: 3. A is true, but R is false

” Petroleum Refining Process “

Question 3.

  1. Assertion (A) Coke is a pure form of carbon.
  2. Reason (R) It is used in the manufacture of steel.

Answer: 2. Both A and R are true, but R is not the correct explanation of A

Question 4.

  1. Assertion (A) CNG stands for compressed natural gas.
  2. Reason (R) CNG is stored under high pressure.

Answer: 1. Both A and R are true, and R is the correct explanation of A.

Question 5.

  1. Assertion (A): Exhaustible resources are limited in nature.
  2. Reason (R) Fossil fuels are an example of exhaustible resources.

Answer: (1) Both A and R are true, and R is the correct explanation of A.

” Compressed Natural Gas (Cng) “

Class 8 Science Chapter 3 Coal And Petroleum

The following questions consist of two statements, Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

  1. Both A and R are true, and R is the correct explanation of A.
  2. Both A and R are true, but R is not the correct explanation of A.
  3. A is true, but R is false.
  4. A is false, but R is true.

Question 11.

  1. Assertion (A) We get different constituents such as petrol, kerosene, diesel, etc. from petroleum.
  2. Reason (R) The process of separating the various useful constituents (fractions) of petroleum is known as refining.

Answer: 1. Both A and R are true, and R is the correct explanation of A.

” Cbse Class 8 Science Question And Answers “

Question 12.

  1. Assertion (A): Coal should not be burned in a closed room.
  2. Reason (R): Coal releases carbon dioxide.

Answer: 1. Both A and R are true, and R is the correct explanation of A.

Question 13.

  1. Assertion (A) Natural gas is a very important fossil fuel.
  2. Reason (R) It produces oxygen while burning.

Answer: 3. A is true, but R is false.

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