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Fuels and Combustion

Fuels and Combustion
Coke made in narrower by-product coke ovens (as compared to wider ovens) is

Stronger
All of these
Less reactive
Smaller in size

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Fuels and Combustion
Which of the following is coking?

Fussain
Both A & B
Vitrain
Neither A nor B

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Fuels and Combustion
Calorific value of dry wood may be around __________ Kcal/kg.

5000
500
50
5

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Fuels and Combustion
Function of secondary air in pulverised coal firing is to

Transport the coal to the burner
Dry the coal
Reduce primary air requirement
Ensure efficient burning of coal around the burner

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Fuels and Combustion
Octane number of 2, 2, 4 - trimethyl pen-tane is

More than 100
In between 0 and 100
100

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Fuels and Combustion
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always

Unpredicatable
1
> 1

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