Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

A. Lengthens the flame

B. Tends to shorten the flame

C. Does not affect the flame length

D. Increases the flame temperature

A. Produced by low temperature carbonisation of coal

B. A domestic fuel

C. Used in blast furnaces

D. None of these

A. 3 & 10

B. 10 & 3

C. 10 & 20

D. 15 & 8

A. Is not undersirable

B. Reduces its calorific value

C. Badly affects the quality of steel

D. Increases its caking power

A. High amount/current of combustion air

B. Low amount/current of combustion air

C. Preheated secondary air

D. Very little excess air

A. Contributes to its heating value

B. Affects the quality of steel produced as cracks develop on the surface while rolling the steel

C. Both A and B

D. Neither A nor B

A. KOH

B. Ammoniacal cuprous chloride

C. Pyrogallol solution

D. None of these

A. O₂

B. CO

C. N₂

D. SO₂

A. Carburetted water gas

B. Gobar gas

C. Natural gas

D. LPG

A. Blast furnace gas

B. Coke oven gas

C. Sewage gas

D. Natural gas