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Fuels and Combustion

Fuels and Combustion
Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.

90-110
>120

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Fuels and Combustion
The pyragallol solution used in orsat apparatus can absorb

All of these
Both O₂ and CO₂
Both O₂ and CO
Only O₂

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Fuels and Combustion
A coal having high volatile matter content will

Burn with a small non-smoky flame
Give less yield of tar and gas on carbonisation
Have a very high calorific value
None of these

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Fuels and Combustion
Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C.

180
30
120
65

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Fuels and Combustion
Coal containing large quantity of __________ are difficult to wash.

Ash
Inherent mineral matter
Free impurities
Volatile matter

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Fuels and Combustion
Stack (chimney) height in a big thermal power plant is dictated by the

Draught to be created
None of these
Pollution control aspect
Limitation of constructional facilities

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