liquid petroleum gas
liquified petrol gas
liquid petrol gas
liquefied petroleum gas
✅ The correct answer is option D.
Engineering
Boost your preparation with the latest Engineering MCQs with answers and explanations. Our collection covers civil engineering, electrical engineering, mechanical engineering, electronics, software engineering, and other core subjects. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and job interviews. Practice online with updated Engineering MCQs to strengthen concepts, improve technical knowledge, and perform better in exams and recruitment tests.
2692. In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of
Transportation of coal
Drying of coal
Combustion of coal by supplying it around the burner
Preheating the primary air
✅ The correct answer is option C.
2693. Aniline point is a property of the
diesel
LPG
naphtha
gasoline
✅ The correct answer is option C.
2694. Height of coke oven is limited (say maximum upto 7 metres) mainly by the
Problem of uniform heating along its height
Structural strength of silica bricks
Problem in door cleaning
Buckling of ram of pusher car at the time of coke pushing
✅ The correct answer is option A.
2695. Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’.
1
5
15
25
✅ The correct answer is option B.
2696. Blast furnace coke is made from coal by
Low temperature carbonisation
High temperature carbonisation
Medium temperature carbonisation
Heating the coal in an oven in presence of air
✅ The correct answer is option B.
2697. __________ is not an important refinery process for upgrading the quality of lubricating oil.
Deoiling
Solvent refinning
Clay treatment
Hydrotreatment
✅ The correct answer is option A.
2698. Catalyst used in catalytic reforming is
platinum on alumina
nickel
iron
aluminium chloride
✅ The correct answer is option A.
2699. Preheating of coal charge for the coke ovens reduces the
Time of carbonisation
Yield of gas and tar
Fuel consumption in coking
All of the above
✅ The correct answer is option D.
2700. Grindability index of a coal is 100. It implies that the
Coal can be pulverised with great difficulty
Coal can’t be pulverised
Coal can be easily pulverised
Power consumption in grinding the coal will be very high
✅ The correct answer is option C.