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Fuels and Combustion

Fuels and Combustion
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

H₂O
CO₂
Both B & C
CO

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

950
750
1150
550

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Fuels and Combustion
Catalyst used in Fischer-Tropsch process is

Thorium oxide
Zinc oxide
Alumina
Nickel

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Fuels and Combustion
Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ?

Hydrocyclones
Multicyclones
Wet scrubber
Bag filter

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Fuels and Combustion
Mineral matter content (M) and ash content (A) in coal are approximately related as

M = A
M = 1.5A
M = 1.1A
M = 2A

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Fuels and Combustion
Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in

KOH
Ammoniacal cuprous chloride
None of these
Pyrogallol solution

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