Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

A. Bituminous coal

B. Coke

C. Semi-bituminous coal

D. Aanthracite

A. High rank coals have higher amount of volatile matter

B. Ratio of fixed carbon to volatile matter increases

C. Oxygen content progressively decreases

D. Calorific value of the coal increases

A. Tar

B. Coke oven gas

C. Pitch

D. Pulverised coke

A. Junker's

B. Bomb

C. Boy's

D. None of these

A. 19

B. 21

C. 23

D. 29

A. Lignite

B. Bituminous coal

C. Anthracite coal

D. None of these

A. 0

B. 100

C. In between 0 and 100

D. More than 100

A. Increases

B. Decreases

C. Remains constant

D. None of these

A. <120

B. >120

C. >280

D. 300-600

A. Theoretical flame temperature is the temperature attained by the products of combustion, when the fuel is burned without loss or gain of heat

B. Burning the fuel with theoretically required amount of pure oxygen results in attainment of maximum adiabatic flame temperature

C. Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature

D. Adiabatic flame temperatures of actual combustions are always less than the maximum values