20
40
65
80
✅ The correct answer is option B.
Engineering
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2412. An example of indirectly heated furnace is the
Soaking pit
Muffle furnace
Reheating furnace
None of these
✅ The correct answer is option B.
2413. The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.
Arc
Resistance
Low frequency induction
High frequency induction
✅ The correct answer is option D.
2414. Large tonnage of refractory bricks are dried in a
Shaft furnace
Rotary hearth furnace
Tunnel kiln
Muffle furnace
✅ The correct answer is option C.
2415. Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.
< 2
< 5
< 8
< 10
✅ The correct answer is option A.
2416. Octane numbers of motor gasoline used in India and America are respectively
87 & 94
94 && 87
94 && 100
83 && 100
✅ The correct answer is option A.
2417. Most commonly used crude heater before the fractionation tower in a refinery is the __________ heater.
electric immersion
pipestill
steam coil
none of these
✅ The correct answer is option B.
2418. Doctor’s solution used for sweetening of petroleum products is
sodium plumbite
sodium sulphite
sodium thiosulphate
lead sulphate
✅ The correct answer is option A.
2419. Quinoline is a/an __________ compound.
sulphur
nitrogen
oxygen
none of these
✅ The correct answer is option B.
2420. Which of the following is a non-regenerative fixed bed catalytic reforming process ?
Hydroforming
Thermofer catalytic reforming
Platforming
Hyperforming
✅ The correct answer is option C.