(i) What are hydrocarbons? (ii) Give the formula of the simplest hydrocarbon. (iii) What is bio gas? (iv) Give two advantages of bio gas. (v) Name the products obtained on burning methane gas.

(i) What are hydrocarbons? (ii) Give the formula of the simplest hydr

1.	(i) What are hydrocarbons? (ii) Give the formula of the simplest hydrocarbon. (iii) What is bio gas? (iv) Give two advantages of bio gas. (v) Name the products obtained on burning methane gas.
Answer» Solution :(i) The ORGANIC compounds which contain only carbon and hydrogenare called hydrocarbon. (II) THEFORMULA of simplest hydrocarbon is `CH_(4)`. (iii) The DECOMPOSITION of farm waste and cow dung in the absence of air gives a mixture of gases called bio gas. (iv) (a) It is pollution free. (b) It has high ratio of energy given out by combustion as compared to the other fuels. (v) Carbon dioxide andwater VAPOUR are theproducts formed on burning methane gas.