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Fuels and Combustion

Fuels and Combustion
If CO₂ is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as

O₂
SO₂
CO
N₂

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Fuels and Combustion
The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C.

100 to 150
550 to 650
700 to 850
350 to 450

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Fuels and Combustion
Gross heating value of coal is __________ the net heating value.

Lower than
Higher than
Same as
None of these

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Fuels and Combustion
Gobar gas is produced by the __________ of 'gobar' (cow dung).

Fermentation
Dehydration
Hydrolysis
Oxidation

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Fuels and Combustion
Which of the following is used for making the explosive 'TNT'?

Toluene
Pyridine
Benzol
Cerosote

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Fuels and Combustion
A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be

More
Same
Data insufficient; can't be predicted
Less

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