2681. A coal with high ash content
Has higher calorific value
Is harder and stronger
Is not subjected to washing
Has low quantity of mineral matter
✅ The correct answer is option B.
Chemical Engineering
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2682. The yield of straight run LPG from crude oil is about __________ weight percent.
20-25
1-1.5
Oct-15
0.1-0.2
✅ The correct answer is option B.
2683. Which of the following is not a sulphur compound present in petroleum ?
Thiophenes
Mercaptans
Sulphones
Pyroles
✅ The correct answer is option D.
2684. Bunsen burner is an example of a/an __________ burner.
Inside mixing/premix type
Outside mixing/diffusion flame/nozzle mix type
Rotary cup
Submerged combustion
✅ The correct answer is option A.
2685. Aromatics have the highes __________ of all the hydrocarbons of same carbon atoms.
smoke point
octane number
cetane number
viscosity
✅ The correct answer is option B.
2686. Viscosity index of a lubricating oil
is the measure of its flash point.
is the measure of variation of viscosity with temperature.
should be low.
none of these.
✅ The correct answer is option B.
2687. LPG stands for
liquid petroleum gas
liquified petrol gas
liquid petrol gas
liquefied petroleum gas
✅ The correct answer is option D.
2688. Lignite is
A high rank coal
A coking coal
Can be used for gasification and steam generation
A black banded coal which burns with a non-smoky yellowish flame
✅ The correct answer is option C.
2689. Paraffin base crude oil as compared to asphalt base crude gives
higher yield of straight run gasoline.
higher octane number gasoline.
lower viscosity index lube oil.
poorer yield of lube oil.
✅ The correct answer is option A.
2690. The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction. n.
Neumann reversal
Shift conversion
Boudouard
Reduction
✅ The correct answer is option C.