Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 44 of 47)

Attempt Fuels and Combustion Quiz
Combustion of pulverised coal as compared to that of lump coal ________________?
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
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Calorific value of dry wood may be around ______________ Kcal/kg?
A. 5
B. 50
C. 500
D. 5000
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Mineral matter, ‘M’ and ash percentage ‘A’ in coal are roughly related as_______________?
A. M = 1.8 a
B. M = 0.5 a
C. M = 1.1 a
D. M = a
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Flue gas from the heating chamber of by product coke ovens is removed by________________?
A. Forced draft fan
B. Induced draft fan
C. Steam ejector
D. Natural draft
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Safe condition for storage of high V.M. bituminous coal is that ___________________?
A. Height of the coal heap should be < 3 metres
B. Maximum 200 tons should be stored in a heap
C. Both a. and b.
D. Neither a. nor b.
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Which of the following is used for making the explosive „TNT‟ ?
A. Benzol
B. Toluene
C. Pyridine
D. Cerosote
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Incomplete combustion of fuel in the furnace is judged by high _____________ of the flue gases?
A. Co content
B. Dew point
C. Co2 content
D. O2 content
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Producer gas containing least amount of tar is produced by the_________________?
A. Partial combustion of coal
B. Partial combustion of large size (< 50 mm) coke
C. High pressure gasification of coal (e.g. in lurgi gasifier)
D. Atmospheric pressure gasification of coal (e.g., in kopper-totzek gasifier)
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Temperature of coke oven gas just before entering into saturator (for recovery of NH3) is about ______________ °C?
A. 30
B. 65
C. 120
D. 180
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The function of secondary combustion air is to ______________________?
A. Pneumatically convey the pulverised coal
B. Completely burn the volatile matter
C. Burn the lumpy coal
D. None of these
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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