The Government of Delhi and Delhi Transport Corporation (DTC) have converted passenger buses into CNG based vehicles. Give reasons for such a decision. Is CNG an ideal fuel according to you? Comment.
CNG is a cleaner fuel than diesel. It does not produce smoke or nitrogen and sulphur oxides on burning.
Moreover, it is much cheaper than diesel. However, CNG cannot be regarded as an ideal fuel.
This is due to the following reasons:
(i) CNG itself is a non-renewable source of energy. Hence, it is not a permanent solution to the energy requirement.
(ii) CNG produces $CO_{2}$ on burning which is a greenhouse gas and a major cause of global warming.
(iii) Efficiency of CNG is lesser as compared to diesel.