1
5
15
25
✅ The correct answer is option B.
Chemical Engineering MCQs
Blast furnace coke is made from coal by
Low temperature carbonisation
High temperature carbonisation
Medium temperature carbonisation
Heating the coal in an oven in presence of air
✅ The correct answer is option B.
__________ is not an important refinery process for upgrading the quality of lubricating oil.
Deoiling
Solvent refinning
Clay treatment
Hydrotreatment
✅ The correct answer is option A.
Catalyst used in catalytic reforming is
platinum on alumina
nickel
iron
aluminium chloride
✅ The correct answer is option A.
Preheating of coal charge for the coke ovens reduces the
Time of carbonisation
Yield of gas and tar
Fuel consumption in coking
All of the above
✅ The correct answer is option D.
Grindability index of a coal is 100. It implies that the
Coal can be pulverised with great difficulty
Coal can’t be pulverised
Coal can be easily pulverised
Power consumption in grinding the coal will be very high
✅ The correct answer is option C.
Which of the following processes is used for the production of petroleum coke ?
Stabilisation
Visbreaking
Cracking
Reforming
✅ The correct answer is option C.
Which of the following accentuates clinker-ing trouble on furnace grate burning coal?
Low reactivity of carbonised residue containing high proportions of iron & sulphur
Low forced draught and fuel bed temperature
Thick fire bed and preheated primary air
All of the above
✅ The correct answer is option D.
Which of the following coke has the least percentage of ash?
Petroleum coke
Beehive coke
Foundary coke
Metallurgical coke
✅ The correct answer is option A.
Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil?
Modern theory
Carbide theory
Engler theory
all (a), (b) and (c)
✅ The correct answer is option B.