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Chemical Engineering · all questions

Fuels And Combustion
practice.

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Which of the following will generate maximum volume of product of complete combustion (Nm3/Nm3 of fuel)?

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Use of excess of combustion air in the combustion of fuels results in

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High excess air in combustion of fuels results in

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Combustion of pulverised fuel

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The internal energy of the combustion products is __________ compared to that of reactants.

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For every 10% increase in the excess air; the fuel consumption increases by __________ percent.

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Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

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Fixed carbon in coal is defined as

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The most matured coal out of the following is

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Yield of charcoal in high temperature carbonisation of wood is about __________ percent.

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While the first commercial low temperature coal carbonisation plant is located at Neyveli (in Chennai), the second such plant has been built at

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

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To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in

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Which of the following is not applicable to fluidised bed combustion of coal?

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Size of blast furnace grade coke is __________ mm.

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The heat of combustion of a fuel

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The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always

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Compound coke ovens are those which can be heated by

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Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)

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Which of the following is a measure of the agglutinating (i.e., binding) property of coal?

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