Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

A. Coke oven gas

B. LPG

C. Blast furnace gas

D. Natural gas

A. Coke

B. Anthracite

C. Coal having low fusion point of its ash

D. Coal having high fusion point of its ash

A. Time of carbonisation

B. Yield of gas and tar

C. Fuel consumption in coking

D. All of the above

A. Solid fuels

B. Liquid fuels

C. Those fuels which are found in the crust of earth

D. Premature fuels with low calorific value

A. Washing fine coal dust (< 0.5 mm size)

B. Washing lump coal (> 80 mm size)

C. Removing ash from the coal based on difference in specific gravity of coal and ash

D. All of the above

A. Domestic

B. Blastfurnace

C. Foundary

D. None of these

A. Is friable, charcoal like substance

B. Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal

C. Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation

D. All of the above

A. Lengthens the flame

B. Causes heat loss of fuel by its partial combustion

C. Both A & B

D. Shortens the flame

A. Furnace oil

B. Bagasse

C. Semi-coke

D. Kerosene

A. Increase the adiabatic flame temperature

B. Increase the calorific value of the fuel

C. Complete the combustion of fuel

D. Reduce its requirement for effecting the complete combustion