Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

A. Potassium hydroxide

B. Dilute potassium carbonate

C. Cuporus chloride

D. Alkaline pyragllol solution

A. 200 meters

B. Infinitely long

C. More than 105.7 metres

D. Equal to the height of the hot gas column producing draught

A. Preheating, blending and de-ashing the coal

B. Stamped charging of coal

C. Dry quenching of coke

D. All of the above

A. Lower ignition temperature

B. Narrower limit of inflammability

C. Higher calorific value

D. Lower theoretical flame temperature

A. Develops a non-luminous flame

B. Develops a low temperature flame

C. Can be done with less excess air

D. Provides a lower rate of heat release

A. Reactivity with O₂

B. Abradability

C. Phosphorus content

D. Volatile matter content

A. CH₄ (upto 90%)

B. C₂H₆

C. C₃H₈

D. H₂

A. Back draughting

B. Banking

C. Under pressurising

D. None of these

A. Reduces its consumption in the furnace

B. Increases its consumption in the furnace

C. Does not affect its consumption in the furnace

D. Decreases its hardness and abrasion resistance

A. Main constituents of LPG are propane and butane

B. C.V. of natural gas is about 10000 kcal/Nm³

C. C.V. of LPG is about 26000 kcal/Nm³ (11500 kcal/kg)

D. LPG is lighter than air