Distinguish between petroleum and petrol.

What do you understand by the term carbonisation?

Point out difference between coal and coke.

The boiling point of three components A, B & C of petroleum are 120^oC, 70^oC , 250^OC. If a mixture of these three is fractionally distilled, which of these will be obtained at the bottom of distillation column?

Coal, petrol, diesel and LPG are the fuels used by now. If they are harnessed completely we would be running short of fuels for cooking and using vehicles and working of factories in our near future. So, we need alternative sources of energy. As young scientist suggests a source of alternative.