1.) Define renewable source of energy.

2.) Which source of energy is formed from the preserved dead bodies of organisms?

3.) Write the full form of LPG.

4.) What types of sources of energy are considered as alternative sources of energy?

5.) What is energy crisis?

6.) What is energy saving?

7.) Define bio-fuel.

8.) Define fossil fuel.

9.) What is fuel?

10.) Name any two fossil fuels.

11.) What can we do with energy?

12.) How is fossil fuel formed? What are the disadvantages of foss fuel?

13.) How does the use of alternative source of energy help to push energy crisis further?

14.) What are disadvantages of fossil fuel?

15.) Describe the advantages of fossil fuel.

16.) List any four ways of saving energy.

17.) Describe energy crisis in short.

18.) How can you motivate your parents for the use of alternative sources of energy?

19.) Energy saving can be known as energy production. Justify this statement.

20.) Bio-gas is an excellent fuel. Justify the statement by giving two sources.

21.) Ram asked her father to set up a solar water heater on the roof top His father asked about the need of such set up. Ram convinced his father and succeeded in setting up a solar water heater on h roof top. i. State one advantage of installing up a solar wa

22.) Differentiate between renewable and non-renewable sources of energy.

23.) Differentiate between energy crisis and energy saving.

24.) Differentiate between bio-fuel and fossil fuel.

25.) Coal is a renewable source of energy. Why?

26.) Gobar gas is considered to be a boon to farmers. Why?

27.) Fossil fuels are used extensively although they are not eco- friendly. Why?

28.) By replacing fossil fuel with alternative sources, energy crisis can be pushed further. Why?

29.) Energy crisis is a burning issue in the world today. Why?

30.) Energy saving is a solution to energy crisis. Why?

31.) The best alternative energy for Nepal is hydroelectricity. Why?

32.) What is fractional distillation?

33.) What is energy?

34.) What are the sources of energy?

35.) What are the uses of energy?

36.) Define renewable source of energy.

37.) Define non-renewable source of energy.

38.) What is fuel?

39.) What are the alternative sources of energy?

40.) What is energy crisis?

41.) Write the full form of LPG.

42.) What is energy saving?

43.) What is biofuel?

44.) What is fossils?

45.) What is fossil fuel?

46.) How is fossil fuel formed?

47.) What are the disadvantages of fossil fuel?

48.) How does the use of alternative source of energy help to push energy crisis further?

49.) Describe the advantages of fossil fuel.

50.) What are the ways of saving energy?

51.) "Energy saving can be known as energy production". Justify this statement.

52.) Bio-gas is an excellent fuel. Explain.

53.) What are the differences between renewable and non-renewable source of energy?

54.) What are the differences between biofuel and fossil fuel?

55.) Coal is a non renewable source of energy. Give reason.

56.) Gobar gas is considered to be a boon to farmers. Give reason.

57.) Fossil fuels are used extensively although they are not eco-friendly. Give reason.

58.) By replacing fossil fuel with alternative sources, energy crisis can be pushed further.

59.) Energy crisis is a burning issue in the world today.

60.) Energy saving is a solution to energy crisis.

61.) The best alternative energy for Nepal is hydroelectricity.

62.) What is an energy crisis? Write any 3 ways to solve it.