EXAMIANS
During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass.
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Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has
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Largest constituent of blast furnace gas is
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Preheating of combustion air is done to
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Grindability index of a coal is 100. It implies that the
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The function of secondary combustion air is to
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Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.
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Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature?
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Emission of dense white smoke out of the chimney of a thermal power plant is an indication of the use of
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For long flame and easy ignition, the coal used should have
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