naphtha
lubricating oils
wax
cracking feedstock
✅ The correct answer is option B.
Chemical Engineering MCQs
Removal of light fractions from crude oil is called its
sweetening
dehydration
stabilisation
visbreaking
✅ The correct answer is option C.
The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.
1.2
12
120
700
✅ The correct answer is option C.
Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the
hearth of the blast furnace.
nuclear reactors, missiles & space crafts.
insulation of high temperature furnaces.
roof of electric furnaces.
✅ The correct answer is option B.
Which of the following has the highest octane number ?
Aromatics
i-paraffins
Naphthenes
Olefins
✅ The correct answer is option A.
Paraffins are desirable in lubricating oil, as it has got high
viscosity
viscosity index
smoke point
pour point
✅ The correct answer is option C.
Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint.
black
white
red
yellow
✅ The correct answer is option B.
Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst.
bauxite
fuller’s earth
activated clay
all (a), (b) & (c)
✅ The correct answer is option D.
Electrical desalting of crude oil removes the __________ impurities.
oleophilic
oleophobic
both (a) and (b)
neither (a) nor (b)
✅ The correct answer is option B.
Hollow refractory bricks are made by
slip casting
hand moulding
pressing/machine moulding
extrusion
✅ The correct answer is option A.