Molten sodium
Light water
Beryllium
Boron hydride
✅ The correct answer is option A.
Chemical Engineering MCQs
Yield of pitch from distillation of high temperature tar is around __________ percent.
10
25
65
90
✅ The correct answer is option C.
Which of the following has the highest flame speed?
CO
H₂
CH₄
C₂H₆
✅ The correct answer is option B.
Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its
Emissivity factor is higher
Sulphur content is lower
Flue gas has lower dew point thereby facilitating more waste heat recovery
All of the above
✅ The correct answer is option D.
Natural draught produced by a chimney depends upon the
Density of the chimney gases
Height of the chimney
Both A & B
Neither A nor B
✅ The correct answer is option C.
In flue gas analysis by Orsat’s apparatus, carbon dioxide is absorbed by
Potassium hydroxide
Dilute potassium carbonate
Cuporus chloride
Alkaline pyragllol solution
✅ The correct answer is option A.
Use of preheated air for combustion of fuel in the furnace, increases the
Scale losses of the furnace stock
Calorific value of the fuel
Flame temperature
None of these
✅ The correct answer is option C.
Low temperature oxidation of coal is accelerated by the
Storage in large heaps
Storage in compressed piles
Absence of porous or friable particles
All of the above
✅ The correct answer is option A.
Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm³ gas ?
Blast furnace gas
Natural gas
Producer gas
Water gas
✅ The correct answer is option B.
In high temperature carbonisation of coal compared to low temperature carbonisation
Yield of ammonia is less
Aromatic content of tar is low
H₂ content in the coke oven gas is more
Calorific value of the coke oven gas is lower
✅ The correct answer is option C.