Temperature of the flue gas
Its height
Both A & B
Neither A nor B
✅ The correct answer is option C.
Chemical Engineering MCQs
Preheating of __________ the flame temperature.
The gaseous fuel before combustion decreases
Combustion air decreases
Either the fuel or the air or both, increases
Either the fuel or the air does not affect
✅ The correct answer is option C.
Caking index of coal blend used for blast furnace coke making is about
8
12
22
36
✅ The correct answer is option C.
Low temperature carbonisation of coal produces
Metallurgical coke
Soft coke
Very low calorific value coke oven gas
No by-products
✅ The correct answer is option B.
In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less.
Difference in gross & net calorific value of the coke oven gas
Free carbon content in tar
Yield percentage of coke
Yield of ammonia present in coke oven gas
✅ The correct answer is option A.
__________ process is meant for direct hydrogenation of coal to produce liquid fuel.
Fischer-Tropsch
Bergius
Lurgi
None of these
✅ The correct answer is option B.
High sulphur (4-6%) coal in India are found in
Assam
Andhra Pradesh
Bengal
Madhya Pradesh
✅ The correct answer is option A.
Which of the following is a single stage, fixed bed high pressure coal gasification process?
Winkler process
Kopper-Totzek process
Lurgi Process
None of these
✅ The correct answer is option C.
Sulphur in metallurgical coal
Contributes to its heating value
Affects the quality of steel produced as cracks develop on the surface while rolling the steel
Both A and B
Neither A nor B
✅ The correct answer is option C.
During its calorific value determination by bomb calorimeter, coal is combusted by
Air
Oxygen
Oxygen enriched air
None of these
✅ The correct answer is option B.