Thermal power stations:

Thermal power stations are set up near coal fields to avoid wastage of transport.

Coal is burnt in power stations

Heat produced is used in heating water

Water is converted to steam

Steam has capacity to rotate turbines

Turbines are connected to generator

Generator produces current

                 Advantages:                                        Disadvantages:

1.large amounts of energy is produced   1.cause pollution

2can be used for commercial purpose     2.liberates smoke and ash

                                                                        3.non renewable source

Questions;

1.why thermal power stations are near coal fields?

2.Define fossil fuels and give egs?

3.What are major limitations of fossil fuels?

4.What is calorific value of coal and its ignition temperature?9500kj/kg&1977 c

5.what is energy transformation occurring in thermal power stations?

6.what are 4 types of coal?

7.whar happens on combustion of coal and write its reaction?

8.what is difference between coal and coke?

9.which is better fuel c₂H₄ or c₂H₂ ?