With the depletion of fossil fuels, we are facing serious energy crisis.
(i) Suggest some whacky funny forms of alternative energy.
(ii) What moral do these funny sources of energy convey ?

Combustion of fossil fuels generates a lot of air pollution. Can you suggest any two alternative sources of energy which do not cause any pollution?

The rapid depletion of fossil fuels has inspired extensive research in the area of alternative and renewale energy sources. Of these, hydroden is the most Contemplated fuel of the future . However cost effective production and hazard free storage are major issuses is using H_(2) . A cylinder contains hydrogen at a pressure of 80MPa at 25^(@)C , Assuming ideal behaviour , Calculate the density of hydrogen in the cylinder in Kg//m^(3) .

Fossil fuels are being increasingly used as an energy source. List any two reasons for replacing these by alternative sources of energy.

Name some alternative sources of energy apart from traditional fuels.

What do you mean by non- conventional / alternative sources of energy ?