Gas yield is less
Tar yield is more
Ignition temperature of coke produced is less
Aromatic content of tar produced is more
✅ The correct answer is option D.
Engineering
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2602. If CO₂ is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as
O₂
CO
N₂
SO₂
✅ The correct answer is option D.
2603. Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.
Smoke
Temperature
Oxygen
Carbon monoxide
✅ The correct answer is option D.
2604. Which of the following is a poisonous fuel gas?
Coke oven gas
Blast furnace gas
Natural gas
None of these
✅ The correct answer is option B.
2605. Naphthenic acid is represented by
CnH2n+2O2
CnH2n-2O2
CnH2n+2O2 (n ≥ 6)
CnH2n+6O2 (n ≤ 6)
✅ The correct answer is option B.
2606. Flash point of motor gasoline may be around __________ °C.
10
45
100
150
✅ The correct answer is option B.
2607. Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.
1 to 5
30 to 80
250 to 350
450 to 500
✅ The correct answer is option B.
2608. Presence of sulphur in gasoline
leads to corrosion.
increases lead susceptibility.
decreases gum formation.
helps during stabilisation.
✅ The correct answer is option A.
2609. The solvent used in Barisol dewaxing process is
hexane
furfural
benzol and ethylene dichloride
methyl ethyl ketone (MEK)
✅ The correct answer is option C.
2610. Which of the following accounts for maximum energy loss in a boiler?
Flue gases
Ash content in the fuel
Incomplete combustion
Unburnt carbon in flue gases
✅ The correct answer is option A.