⟩ Electrical desalting of crude oil removes the __________ impurities. A. oleophilic B. oleophobic C. both (a) and (b) D. neither (a) nor (b)
Option B
Option B
Polymerization A. produces i-octane from cracked gases containing i-butane and butene. B. causes olefins to combine with each other. C. causes aromatics to combine with each other. D. is aimed at producing lubricating oil.
In catalytic alkylation, higher iso-butane to olefin ratio gives A. low final boiling point product B. higher yield C. both (a) and (b) D. neither (a) nor (b)
In case of liquid petrofuels, momentary combustion is observed at its A. flash point. B. preheating temperature corresponding to viscosity of 25 centistokes. C. flame temperature. D. fire point.
Which one is preferred for aircraft engine? A. High viscosity index lube oil. B. Low viscosity index lube oil. C. High freezing point aviation fuel. D. None of these.
In sweetening process, solutizer agent used with caustic alkali is A. potassium isobutyrate B. sodium plumbite C. methanol D. phenol
Petroleum coke is used mainly .in the A. discoloration of yellow glycerine. B. sugar refining. C. manufacture of carbon electrode. D. blast furnace for reduction of iron ore.
Research octane number refers to the A. low octane number motor fuels. B. high octane number motor fuels. C. high octane number aviation fuels. D. unleaded motor fuels.
Pick out the wrong statement. A. Multigrade lubricating oils have high viscosity index. B. Paraffinic oil has very high viscosity index. C. Naphthenic oil has very low viscosity index. D. High viscosity index means a large change in viscosity with change in temperature.
Alkylation A. causes olefins to combine with each other. B. causes olefins to combine with iso-paraffins. C. converts iso-paraffin into olefin. D. converts olefin into paraffin.
Which of the following has the maximum °API gravity of all? A. Diesel B. Kerosene C. Petrol D. Furnace oil