Q. Coking coals are invariably

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Q. Which of the following accounts for maximum energy loss in a boiler ?

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Q. 'Fuel' can be defined as a substance which produces heat by

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Q. Washing of coal

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Q. Which of the following is not a manufactured fuel ?

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Q. Coke oven gas constitutes mainly of

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Q. Gross heating value of coal is __________ the net heating value.

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Q. Which of the following is a rich fuel gas ?

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Q. Low temperature carbonisation of coal produces

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Q. Blast furnace coke is made from coal by

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Q. Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

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Q. Coke oven gas is stripped of its H₂S and mercaptans content by

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Q. In Lurgi coal gasifier,

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Q. Mineral matter content (M) and ash content (A) in coal are approximately related as

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Q. Use of pulverised coal in boiler furnace provides

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Q. Deficiency of combustion air during combustion of a gaseous fuel

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Q. Froth floatation is used for

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Q. (64-132) rank coal (ASTM) means a coal with 64%

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Q. The sequence of absorption in flue gas analysis by Orsat's apparatus is respectively

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Q. Which of the following is not a 'manufactured' fuel ?

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