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Fuels and Combustion

Fuels and Combustion
Gross calorific value will be equal to the net calorific value for

C₂H₆
C₂H₂
H₂
CO

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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
Washing of coal decreases its

Ash content
Caking index
Both B and C
Mineral matter content

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Fuels and Combustion
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is

Either lower or higher, depends on the type of fuel
Same
Much higher
Much lower

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Fuels and Combustion
Emission of dense white smoke out of the chimney of a thermal power plant is an indication of the use of

Correct amount of air for combustion
Too much air for combustion
Less air for combustion
Pulverised coal in boilers

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Fuels and Combustion
Calorific value of wood gas is about __________ kcal/Nm³.

8500
3300
1500
5400

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