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The gas produced by the passage of air o...

The gas produced by the passage of air over hot coke is

A

Carbon monoxide

B

Carbon dioxide

C

Producer gas

D

Water gas

Text Solution

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The correct Answer is:
C
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Gaseous fuels due to their advantages over ther types of fuels are becoming highly popular . The advantages to the gaseous fuels are as follows : a. High calorific value . b. Do not produce smoke and do not leave ash after combustion . c. They can flow through pipes and can be ignite at a moment's notice at any place . No special devices are required for their combustion . i. Coal gas is a good gaseous fuel as it contains 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 endothermic . iii. Producer gas , which possesses low calorific value, so prepared by passing air over red hot coke . It contains mainly nitrogen and CO iv. Semi-water gas is a mixture of water as and producer as . v. oil gas , which is used in labs , is obtained by cracking of kerosene . It is a mixture of hydrocarbon (saturated and unsaturated ) mainly lower hydrocarbons . iv. LPG , which contains C_3 and C_4 hydrocarbon of the alkane and alkene series , supplied in cylinders for domestic uses is very popular these days . Which gas is the essential constituent of most of the fuels ?

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