Category: Fuels and Combustion

A. Convert CO to CO2
B. Increase the combustion rate
C. Increase the gas production rate
D. Minimise the chances of clinker formation

A. CO2
B. CO
C. O2
D. C

A. Potassium hydroxide
B. Dilute potassium carbonate
C. Cuprous chloride
D. Alkaline pyrogallol solution

A. 2.5
B. 7.5
C. 10.5
D. 14.5

A. 150
B. 1500
C. 3500
D. 5000

A. Low
B. High
C. Very high, if the fuel is of low calorific value
D. None of these

A. Percentage of ash in coke produced from medium coking coal is more than that in coal
B. The calorific value (kcal/Nm3) of coke oven gas reduces on removal of hydrogen from it by
cryogenic method
C. Ash is normally removed as ‘fly-ash’ in Kopper-Totzek process of coal gasification
D. Coal based fertiliser plants in India at Talcher (Orissa) and Ramagundam (A.P) employ
Kopper-Totzek process of coal gasification

A. Burning on travelling grate
B. Coke making
C. Burning on firebars
D. All A., B. and C.

A. Nickel
B. Zinc oxide
C. Alumina
D. Thorium oxide

A. LPG
B. Coal briquettes
C. Tar
D. Colloidal fuels