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Fuels and Combustion

Fuels and Combustion
Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

Boy's
None of these
Junker's
Bomb

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Fuels and Combustion
Which of the following has the least calorific value (kcal/Nm³) ?

Natural gas
Blast furnace gas
Coke oven gas
Sewage gas

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Fuels and Combustion
Which of the following fuels is the best for burning on chain grate stoker?

Coking coal
Pulverised coal
Caking coal
Non-caking coal

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Fuels and Combustion
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

CO₂
CH₄
N₂
H₂

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Fuels and Combustion
If oxygen content in the flue gas rises too high, fuel is being wasted by

Moisture loss
None of these
Incomplete combustion
Dry gas/stack gas loss

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Fuels and Combustion
Hard pitch is used for making

Perfumes
Pulverised fuel
Insecticides
Plastics

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