Fuels and Combustion MCQs

469 MCQs — Chemical Engineering MCQs (Page 41 of 47)

Attempt Fuels and Combustion Quiz

Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant ?

A. Silica gel
B. Diatomaceous earth
C. Basalt
D. Bog iron (i.e., mosit ferric hydroxide)

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Calorific value as determined by bomb calorimeter is the__________________?

A. Higher calorific value at constant volume
B. Gross calorific value at constant pressure
C. Lower calorific value at constant pressure
D. Net calorific value at constant volume

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Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about ______________ Kcal/Nm3?

A. 1,800
B. 3,200
C. 5,400
D. 10,200

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Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction ?

A. 2co ↔ c + co2
B. Co + h2o ↔ co2 + h2
C. C + h2o ↔ co + h2
D. C + 2h2o ↔ co2 + 2h2

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Coke oven gas compared to blast furnace gas is________________?

A. More explosive and inflammable
B. Less posionous
C. Lighter
D. All a., b. and c.

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Which of the following gaseous fuels is likely to have the highest gross calorific value ?

A. Sewage gas
B. Lpg
C. Producer gas
D. Natural gas

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Mineral matter content (M) and ash content A. in coal are approximately related as _______________?

A. M = 1.1a
B. M = a
C. M = 1.5a
D. M = 2a

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Preheating of a gaseous fuel results in increased____________________?

A. Flame length
B. Flame temperature
C. Quantity of flue gas
D. Ignition temperature

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Efficiency of the combustion of a fuel is judged by the ______________ the flue gas?

A. % of co2 in
B. % of o2in
C. Temperature of
D. Colour of

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Which of the following is not applicable to fluidised bed combustion of coal ?

A. It cannot burn low grade coal
B. It achieves higher fuel combustion efficiency
C. Less heat transfer surface area is required in boilers
D. None of these

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