decreases
increases
remains unchanged
decreases linearly
✅ The correct answer is option B.
Chemical Engineering MCQs
Naphtha yield in straight run distillation of crude oil may be about __________ percent.
2
6
12
18
✅ The correct answer is option B.
The first crude oil refinery of India is located at
Naharkatiya
Digboi
Kochin
Madras
✅ The correct answer is option B.
Which of the following has the lowest cetane number ?
Aromatics
i-paraffins
Naphthene
Olefins
✅ The correct answer is option A.
With increase in calorific value of fuels, their adiabatic flame temperatures
Increase
Decrease
Remain unchanged
May increase or decrease ; depends on the quantity of products of combustion
✅ The correct answer is option D.
Bulk density of pulverised coal may be about __________ kg/m³.
100
500
1000
1500
✅ The correct answer is option B.
Deficiency of combustion air during combustion of a gaseous fuel
Lengthens the flame
Causes heat loss of fuel by its partial combustion
Both A & B
Shortens the flame
✅ The correct answer is option C.
Most widely used solvent for dewaxing is
methyl-ethyl-ketone (MEK)
naphtha
petroleum ether
sodium plumbite
✅ The correct answer is option A.
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.
50
70
90
140
✅ The correct answer is option C.
Products drawn from the top to bottom of the crude oil distillation column has progressively increasing
boiling points
molecular weight
C/H ratio
all (a), (b) and (c)
✅ The correct answer is option D.