CLASS-VIII

SOURCES OF ENERGY

WORKSHEET-SE1

A. MCQs:

1. Natural Gas is an example of

a)      Renewable and exhaustible source of energy

b)      Non-renewable and exhaustible source of energy

c)      Renewable and inexhaustible source of energy

d)      Non-renewable and inexhaustible source of energy

2. Coal and Petroleum are

a)      natural resources             c)     fossil fuels

b)      exhaustible resources      d)    all of the above

3. Which of the following represents water gas?

a)      CO₂  +  H₂

b)      CO + O₂

c)      CO + H₂

d)      O₂  +  H₂

4. Which of the following is not a renewable source of energy?

         a)      Sun                       c)  Biomass

b)   Petroleum              d)  Wind

5. Which is not a clean fuel?

  a)    LPG                                  c)    Petrol

  b)    CNG                                 d)    Biogas

B. Fill in the blanks:

1. __________ is used for extraction of metals.
2. Petroleum gas liquefied under pressure is called________________.
3. Natural gas is found between __________ and _______________.
4. ____________ is the largest source of CO₂  emissions.
5. ________ and _________ are used as domestic fuels.

C. Short-ans questions:

1. Why is coal a better fuel than wood?
2. Name 3 places where gas fields have been discovered in India.
3. Give 2 uses of natural gas.
4. Why is asphalt coated at the underside of electric poles?
5. List four forms of energy that you use from morning when you wake up, till you reach the school.
6. Write some characteristics of a good fuel. ( at least 3)
7. What is geothermal energy?
8. Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?