Q. Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal ?

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Q. Which of the following is not a by-product fuel?

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Q. White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is

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Q. Too much of excess air in combustion results in high

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Q. A fuel with high heat release rate will

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Q. Pick out the correct statement.

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Q. Which of the following is a single stage, fixed bed high pressure coal gasification process ?

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Q. Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.

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Q. In flue gas analysis by Orsat's apparatus, carbon monoxide is absorbed by

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Q. Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%).

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Q. C/H ratio is the maximum in case of

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Q. Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.

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Q. Low temperature oxidation of stored coal results in the

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Q. Gross calorific value will be equal to the net calorific value for

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Q. Bulk density of pulverised coal may be about __________ kg/m³.

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Q. The maximum adiabatic flame temperature is attained, when the fuel is burnt with

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Q. Grindability index of a coal is 100. It implies that the

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Q. The cooling medium used in dry quenching of coke is

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

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

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