2941. 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.
Chemical Engineering
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2942. 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.
2943. Fuel for a fast breeder nuclear reactor is
Plutonium
Uranium
Radium
Neptunium
✅ The correct answer is option A.
2944. Which of the following is coking?
Vitrain
Fussain
Both A & B
Neither A nor B
✅ The correct answer is option A.
2945. 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.
2946. When the coal is heated in absence of air, it is called its
Deoxidation
Gasification
Coalification
Carbonisation
✅ The correct answer is option D.
2947. Which of the following bricks should not be used, if the furnace is to be used intermit-tantly ?
Firebricks
Silica bricks
Silicon carbide bricks
Sillimanite
✅ The correct answer is option B.
2948. Which of the following is used as a solvent in deasphalting of petroleum products ?
Furfural
Propane
Methyl ethyl ketone
Liquid sulphur dioxide
✅ The correct answer is option B.
2949. A typical yield of kerosene in straight run distillation of crude oil may be about __________ percent.
4
10
18
26
✅ The correct answer is option B.
2950. Olefins are
saturated hydrocarbons.
unsaturated cyclic compounds (hydrocarbons).
present in substantially good quantity in crude petroleum.
none of these.
✅ The correct answer is option D.