Coal and Petroleum Class 8 Science NCERT and Imp. Questions (Khóa học)

Q.1: What are the advantages of using CNG and LPG as fuels?
Q.2 : Name the petroleum product used for surfacing of roads.
Q.3: Describe how coal is formed from dead vegetation. What is this process called?
Q.4: a) Name three fossil fuels.
b) Name the process of separation of different constituents from petroleum.
c) Name the least polluting fuel for vehicle.
Q.5. Tick True/False against the following statements.
a) Fossil fuels can be made in the laboratory.
(b) CNG is more polluting fuel than petrol.
(c) Coke is almost pure form of carbon.
(d) Coal tar is a mixture of various substances.
e) Kerosene is not a fossil fuel.
Q.6. Explain why fossil fuels are exhaustible natural resources.
Q.7.Describe characteristics and uses of coke.
Q.8. Explain the process of formation of petroleum.
Q. 9. The following Table shows the total power shortage in India from 1991–1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.
Important Questions/Answers
Q. 1. Sunlight and air are inexhaustible natural resources. Comment.
Q.2. Write two important uses of coke.
Q.3. What steps would you suggest for the judicious use of fossil fuels?
Q.4. Explain about coal tar.
Q. 5.Where do we get coal and how is it formed?
Q. 6. Define the term ‘petrochemicals’.
Q.7. Name two products that you obtain from the destructive distillation of coal. What is the residue left in’ this process? Give one main use of this residue.
Q.8. Can forests help reduce the pollution caused by burning of fossil fuels? How?
Q.9. None of the fuels is clean fuel. Comment.
Q. 10. Name some renewable sources of energy.
Q.11. Give some examples of fossil fuels.
Q.12.Name the elements present in coal.
Q.13. Which are the two main techniques of mining?
Q.14. List four varieties of coal.
Q.15. Name the process of conversion of wood into coal.
Q.16. Mention the temperature at which destructive distillation is done.
Q. 17. When the crude oil is referred to be ‘sweet’?
Q.18.Name the country which is the leading producer of petroleum.
Q.19.Name the gas that occurs over petroleum in reservoirs deep inside the earth.
Q.20.Expand PCRA.
Q.21.Name two fractions of petroleum which are used as fuel.
Q.22.What kind of pollution is caused by the burning of fossil fuels?
Q.23.Write the full form of LPG.
Q.24.Which gas is produced when coal is burnt in air?
Q.25.Can we use all our natural resources forever?
Q.26.What is the purest form of carbon?
Q.27.What is fuel?
Q.28. What other source of energy may be used to drive vehicles?
Q.29.Name three constituents of petroleum and write their uses also.
Q.30. Can forests help reduce the pollution caused by burning of fossil fuels? How?
Q.31.Radhey prefers to go to school by pooling car. On other occasions he like to opt for public transport rather than private transport. For short distances, he walks or uses bicycle.
(a) What are the benefits of carpooling?
(b) Which mean of transport do you think is best for short distances?
(c) How on our end we can reduce the consumption of fossil fuels?
29 Important MCQ
31 Important Fill in the Blanks