Q. A particular coal is said to be free burning when it

View solution

Q. Gobar gas is produced by the __________ of 'gobar' (cow dung).

View solution

Q. Octane number of 2, 2, 4 - trimethyl pen-tane is

View solution

Q. Which of the following has the highest flame speed ?

View solution

Q. Coke ovens in steel plant are heated by

View solution

Q. Coke oven gas is a better fuel than blast furnace gas, because of its higher

View solution

Q. Short/intense flame is produced during combustion of gaseous fuel by using

View solution

Q. The reaction, C + CO₂ ↔ 2CO, taking place during coal gasification is called the __________ reaction.

View solution

Q. The maximum percentage of CO₂ in a flue gas (from a carbonaceous fuel) can be

View solution

Q. A good quality coal should have

View solution

Q. High amount of sulphur and phosphorous in coke causes

View solution

Q. The difference between total carbon and fixed carbon of coal will be minimum in case of

View solution

Q. A sample of natural gas containing 80% methane (CH₄) and rest nitrogen (N₂) is burnt with 20% excess air. With 80% of the combustibles producing CO₂ and the reminder going to CO, the Orsat analysis in volume percent is

View solution

Q. Which of the following would require maximum amount of % excess air for complete combustion ?

View solution

Q. During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

View solution

Q. Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

View solution

Q. Low temperature oxidation of coal is accelerated by the

View solution

Q. By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of

View solution

Q. Naphthalene is removed from coke oven gas by

View solution

Q. Coke oven gas compared to blast furnace gas is

View solution