Q. Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.

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Q. Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.

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Q. Ammonia content in raw coke oven gas is about __________ gm/Nm³.

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Q. Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis.

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Q. Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

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Q. Which of the following has the highest theoretical flame temperature ?

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Q. Ultimate analysis of coal determines its __________ content.

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

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Q. High sulphur (4-6%) coal in India are found in

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Q. High ash coals

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

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Q. Preheating of combustion air is done to

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Q. Anthracite can be used for

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Q. Sulphur in metallurgical coal

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Q. L.D. converter gas (produced in steel plant) comprises mainly of

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Q. Main constituents of purified Lurgi gas are

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Q. Catalyst used in Fischer-Tropsch process is

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Q. Which of the following coal gasification processes will produce gas having maximum methane content ?

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Q. Traces of tar fog present in the coke oven gas is removed by

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Q. Ionisation potential applied across the electrodes of electrostatic tar precipitator is around

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