Energy is perhaps a country`s most vital need. Without energy nothing will move. It is recognised that the common fossil fuels, like coal and petroleum, are exhaustible assets; once consumed they do not grow again. Hence there is global realisation that if we are not careful and farsighted about the use of these fuels, we may well run out of them in not very distant future. Of the two, petroleum is more efficient and useful fuel. A very wide range of ...