2775. Which of the following processes consumes hydrogen ?
Fluid catalytic cracking
Visbreaking
Propane deasphalting
None of these
✅ The correct answer is option A.
2780. Low temperature oxidation of coal during storage does not decrease its
Oxygen content
Caking power
Calorific value
None of these
✅ The correct answer is option D.
2784. __________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.
Magnesium
Potassium
Calcium
Sodium
✅ The correct answer is option A.
2789. A gaseous fuel in order to develop luminousity on burning, must contain
Carbon monoxide
Hydrocarbons
Hydrogen
Oxygen
✅ The correct answer is option B.
2793. The main aim of cracking is to produce
gasoline
lube oil
petrolatum
coke
✅ The correct answer is option A.
2724. Percentage of carbon monoxide in blast furnace gas may be around
8
14
22
52
✅ The correct answer is option C.
2729. Performance number of a liquid fuel is related to its
wax content
spontaneous ignition temperature
knocking tendency
sulphur content
✅ The correct answer is option B.
2734. The maximum adiabatic flame temperature is attained, when the fuel is burnt with
Theoretically required amount of air
More than theoretically required amount of air
Less than theoretically required amount of air
Theoretically required amount of oxygen
✅ The correct answer is option D.
2737. Which of the following tests is not done for transformer oil ?
Flash point and acid value.
Aniline point.
Dielectric strength.
Copper strip corrosion test.
✅ The correct answer is option B.
2742. Which of the following fuels has the highest calorific value per unit mass (kcal/kg)?
Coal
Kerosene
Natural gas
Furnace oil
✅ The correct answer is option D.