Calorific value
Higher C/H ratio
Sulphur content
Difference in gross & net calorific value
✅ The correct answer is option B.
Chemical Engineering MCQs
Bituminous coal
Ignites less easily than anthracite
Is generally coking
Burns with smoky yellow flame
Both B and C
✅ The correct answer is option D.
Which of the following is not applicable to fluidised bed combustion of coal?
It can not burn low grade coal
It achieves higher fuel combustion efficiency
Less heat transfer surface area is required in boilers
None of these
✅ The correct answer is option A.
Fuel for a fast breeder nuclear reactor is
Plutonium
Uranium
Radium
Neptunium
✅ The correct answer is option A.
Which of the following is coking?
Vitrain
Fussain
Both A & B
Neither A nor B
✅ The correct answer is option A.
The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always
1
< 1
> 1
Unpredictable
✅ The correct answer is option C.
When the coal is heated in absence of air, it is called its
Deoxidation
Gasification
Coalification
Carbonisation
✅ The correct answer is option D.
In sweetening process, solutizer agent used with caustic alkali is
potassium isobutyrate
sodium plumbite
methanol
phenol
✅ The correct answer is option A.
The characterisation factor of a crude oil is calculated as 12.5. It means that; it is
paraffinic
naphthenic
intermediate
none of these
✅ The correct answer is option A.
Alkylation
causes olefins to combine with each other.
causes olefins to combine with iso-paraffins.
converts iso-paraffin into olefin.
converts olefin into paraffin.
✅ The correct answer is option B.