2725. Which of the following has the highest heat of combustion?
H₂
CO
CH₄
C₂H₆
✅ The correct answer is option D.
2730. Higher pressure in the reforming reactor
increases coke formation.
increases the rate of reaction.
produces high octane number gasoline.
none of these.
✅ The correct answer is option D.
2738. Lane and Garton classification of petroleum is based on its
composition
specific gravity
optical properties
viscosity
✅ The correct answer is option B.
2743. Which of the following is the most reactive (as regards the formation of CO + H₂ from C + H₂O) ?
Blast furnace coke
Low temperature coke
Anthracite coal
Sub-bituminous coal
✅ The correct answer is option B.
2748. Petroleum
is optically active.
constitutes mainly of olefins.
does not contain asphalt.
does not contain aromatics.
✅ The correct answer is option A.
2753. Gobar gas constitutes mainly of
CH₄ & CO₂
CO & CO₂
CH₄ & N₂
CO & N₂
✅ The correct answer is option A.
2758. The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol.
3
300
3000
1000
✅ The correct answer is option A.
2763. In general, the limit of inflammability/explosion limit of fuel gases is widened by the
Increase in gas pressure
Increase in temperature (i.e. preheating)
Use of pure oxygen for combustion instead of air
All of the above
✅ The correct answer is option D.
2777. Which one is used to determine the colour of petroleum products ?
Colour comparator
Saybolt chromometer
Cleveland apparatus
None of these
✅ The correct answer is option A.