Q2 of 46 Page 269

In the list of sources of energy given below, find out the odd one.

(wind energy, solar energy, hydroelectric power)

Out of all the three options available, if we compare the type of method of these sources of energy have, the wind energy and the hydroelectric power are the Conventional methods of energy whereas the solar energy is the Non-Conventional method of energy.


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10

What is the main raw material used in the production of biogas?

 1

Fill in the blanks

i) Potential difference: voltmeter; then current __________.


ii) Hydro power plant: Conventional source of energy; then solar energy: _________.

 3

Correct the mistakes, if any, in the following statements.

i) A good source of energy would be one which would do a small amount of work per unit volume of mass.


ii) Any source of energy we use to do work is consumed and can be used again.

 4

The schematic diagram, in which different components of the circuit are represented by the symbols conveniently used, is called a circuit diagram. What do you mean by the term components?