Pollution control aspect
Draught to be created
Limitation of constructional facilities
None of these
✅ The correct answer is option B.
Chemical Engineering MCQs
Gum formation in stored gasoline is mainly due to the
alkylation of unsaturates.
presence of sulphur.
oxidation & polymerisation of unsaturates.
higher aromatic content.
✅ The correct answer is option C.
A particular coal is said to be free burning when it
Burns completely
Gives smokeless burning
Shows little or no fusing action
None of these
✅ The correct answer is option C.
Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).
0.03
3
35
70
✅ The correct answer is option B.
The difference between total carbon and fixed carbon of coal will be minimum in case of
Lignite
Bituminous coal
Anthracite
High temperature coke (V.M < 0.5%)
✅ The correct answer is option D.
True vapour pressure of a petroleum fraction __________ Reid vapour pressure.
is less than
is more than
is same as
may be either more or less than
✅ The correct answer is option B.
Pick out the undesirable property for a solvent meant for dewaxing of lube oil.
Complete miscibility with oil.
High solubility of wax in the solvent.
Both (a) and (b).
Neither (a) nor (b).
✅ The correct answer is option C.
Bomb calorimeter is used for the determination of calorific value of the __________ fuels.
Gaseous
Solid
Liquid
Both B and C
✅ The correct answer is option D.
Higher viscosity of lubricating oil usually signifies
lower Reid vapour pressure.
higher acid number.
higher flash point and fire point.
lower flash point and fire point.
✅ The correct answer is option C.
Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm.
50
1000
5000
10000
✅ The correct answer is option A.