__________ is used as jet engine fuel ?

A. Petrol
B. Diesel
C. Kerosene
D. LPG

Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt ‘using theoretical amount of air in___________________?

A. Air
B. Oxygen
C. Either A. or B.
D. Either A. or B. without gain or loss of heat

Low temperature oxidation of coal during storage does not decrease its__________________?

A. Oxygen content
B. Caking power
C. Calorific value
D. None of these

Calorific value of a typical dry anthracite coal may be around _____________ Kcal/kg?

A. 1000
B. 4000
C. 8000
D. 15000

The catalyst used in shift converter is _____________________?

A. Nickel
B. Vanadium
C. Silica gel
D. Alumina

With increase in the temperature of carbonisation of coal ___________________?

A. Hydrogen content of coke oven gas increases due to cracking of hydrocarbons
B. Methane content in the coke oven gas decreases and carbon monoxide content increases
C. Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not
compensated by increase in CO & H2 content

Volatile matter content in coking coal may be about _____________ percent?

A. 1
B. 7
C. 22
D. 46

The maximum adiabatic flame temperature is attained, when the fuel is burnt with ______________________?

A. Theoretically required amount of air
B. More than theoretically required amount of air
C. Less than theoretically required amount of air
D. Theoretically required amount of oxygen

Atomising steam to fuel oil ratio in a burner should be around__________________?

A. 0.5
B. 1.5
C. 2.5
D. 3.5

Gobar gas is produced by the _______________ of ‘gobar’ (cow dung) ?

A. Hydrolysis
B. Fermentation
C. Oxidation
D. Dehydration