Gaseous fuels due to their advantages over ther tupes of fuels are becoming highly popular . The
Channel: Doubtnut
Date: 02/08/2020

Gaseous fuels due to their advantages over ther tupes of fuels are becoming highly popular . The advantages fo the fgaseous fuels are as follows :  a. High calorigic value .  b. Do not produce smoke and do not leave ash after combstion .  c. They can flow through pipes and can be ignige at a moment's notic eat any place . No sp-ecial devices are required for their combustion .  i. Coal gas is a good gaseous fuel as it conitains `95^5` combustible gaseous such as `H_2, CH_4, CO` etc , It is obtained buy destructive distillation of coal at ` 100^@ C` .  ii. Water gas is a mixture of ` CO` and `H_2` and is prepared by passing steam over incandescnt coke . The reaction is owever endothermic .   iii. Producer gas , which possesses low calorific value, so prepared by passing aair over red hot coke . It contains mainly nitrogen and ` CO`  iv. Semi-water gas is a mixture of water fas and producer fas .  v. oil gas , which is used in laboratries , is obtained by cracking of kerosene . It is a mixture of hydrocarbon (saturated and unsatureated ) mainly lower hudrocarons .  iv. `LPG`, which contains ` C_3` and ` C_4` hydrocarbon of the alkane and alkene serties , suppied in cylinders for domestic uses is very populsr these days .  Wich fgas is the essential constituent of most of the fuels ?