CBSE Class 8 Science Chapter 3 Coal And Petroleum LAQs

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CBSE Class 8 Science Chapter 3 Coal And Petroleum Long Answer Questions

Question 1. Ravi prefers to go to school by pooling car. On other occasions he likes to opt for public transport rather than private transport. For short distances, he walks or uses a bicycle.

1. Which means of transport do you think is best for short distances?

  1. Small vehicles
  2. Bicycles
  3. Large vehicles
  4. Motor bike

Answer: 2. Bicycle, as it is an eco-friendly and cost-effective mode of transport, which can be used for short distances.

” Cbse Class 8 Science Chapter 3 Laqs “

CBSE Class 8 Science Chapter 3 Coal And Petroleum LAQs

2. Which department advises people to save petrol/diesel while driving?

  1. UNESCO
  2. Traffic department
  3. PCRA
  4. NHAI

Answer: 3. PCRA (Petroleum Conservation Research Association) advises people to save petrol/diesel while driving.

” Coal And Petroleum Class 8 “

Class 8 Science List The Major Products Obtained From Petroleum And Their Uses

Question 2. The picture shows how petroleum and natural gas are extracted through oil wells

CBSE Class 8 Science Chapter 3 Oil and Gas Reservoir Diagram (2)

” Formation Of Fossil Fuels Class 8 “

Which of the following statements is supported by the picture?

Circle ‘Yes’ or ‘No’ for the correct response.

CBSE Class 8 Science Chapter 3 Petroleum and Natural Gas Properties

Answer:

  1. Yes
  2. No, gases are lighter than liquids (petroleum)
  3. Yes

Read And Learn More CBSE Class 8 Science Long Answer Questions

” Petroleum Products And Their Uses “

2. Which of these conditions is required for the formation of natural gas?

  1. Low pressure
  2. Presence of air
  3. High temperature
  4. Presence of water

Answer: 3. High temperature

CBSE Class 8 Science Chapter 3 Coal And Petroleum Long Answer Type Questions

3. Which of these petroleum products is used for heavy motor vehicles?

  1. LPG
  2. Diesel
  3. Petrol
  4. Kerosene

Answer: 2. Diesel

4. What is the advantage of using CNG instead of petrol in light motor vehicles?

  1. It can be stored easily
  2. It can be extracted easily
  3. It causes less air pollution
  4. It releases more energy on combustion

Answer: 3. It causes less air pollution.

” Natural Gas Formation And Properties “

Question 3. The table shows two groups of natural resources.

CBSE Class 8 Science Chapter 3 Coal Formation Process Diagram

1. Which of these statements is true about coal? Circle ‘Yes’ or ‘No’ for the correct response.

CBSE Class 8 Science Chapter 3 Coal Formation Questions

Answer:

  1. No
  2. Yes, coal is formed from plant remains buried deep under the Earth.
  3. Yes, the formation of coal requires high temperature and high pressure.

” Cng Vs Petrol Advantages “

2. Where is a coal reserve most likely to be found?

  1. Inside volcanoes
  2. Beneath glaciers
  3. On the ocean floors
  4. Under the land surface

Answer: 4. Under land surfaces

3. Which gas is mainly emitted during the combustion of coal?

Answer: Carbon dioxide

” Pcra And Fuel Conservation “

4. Coke is a product obtained by the processing of coal. Which of these is a byproduct of making coke?

  1. Coal tar
  2. Bitumen
  3. Coal gas
  4. Kerosene

Answer: 3. Coal gas

5. The material X is a fossil fuel. It is formed from the buried large land plants (vegetation) by a very slow process. When X is heated in the absence of air, it gives three products, A, B, and C.
Answer: A is used in steel making, B is used as an industrial fuel, whereas product C has been traditionally used for metallising the roads. It is now replaced by a petroleum product, bitumen.

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