⟩ Solvent used for dewaxing of petroleum products are A. furfural B. methyl ethyl ketone (MEK) C. propane D. both(b)&(c)
Option C
Option C
Choose the correct statement. A. Coking tendency increases with increasing molecular weight. B. Coking tendency decreases with increasing molecular weight. C. Higher pressure enhances coke formation. D. Coking is an exothermic reaction.
In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process. A. 100 B. 200-300 C. 1000-10000 D. 10
Presence of sulphur in gasoline A. leads to corrosion. B. increases lead susceptibility. C. decreases gum formation. D. helps during stabilisation.
Aniline point of the diesel is a measure of its __________ content. A. aromatic B. paraffin C. olefin D. naphthene
Petroleum A. is optically active. B. constitutes mainly of olefins. C. does not contain asphalt. D. does not contain aromatics.
Which of the following additives improves the cetane number of diesel? A. Amyl nitrate B. Ethyl mercaptan C. Napthenic acid D. Tetra ethyl lead
Both asphalt and wax are produced by __________ base crude oils. A. naphthenic B. asphalt C. paraffin D. mixed
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.