⟩ What is mail gateway in network engineering?
It is a system that performs a protocol translation between different electronic mail delivery protocols.
It is a system that performs a protocol translation between different electronic mail delivery protocols.
Phenols are added in gasoline to A. improve the octane number. B. act as an antioxidant. C. reduce its viscosity. D. increase its pour point.
Which of the following is desirable in diesel and kerosene but is undersirable in gasoline? A. Aromatics B. Mercaptans C. Paraffins D. Naphthenic acid
Name the hydrocarbon having the poorest oxidation stability. A. naphthene B. olefin C. paraffin D. aromatics
Olefins are A. saturated hydrocarbons. B. unsaturated cyclic compounds (hydrocarbons). C. present in substantially good quantity in crude petroleum. D. none of these.
Testing of the knocking characteristics of petrofuels is done in a __________ engine. A. Carnot B. CFR (Co-operative fuel research) C. Stirling D. diesel
The first crude oil refinery of India is located at A. Naharkatiya B. Digboi C. Kochin D. Madras
Pick out the wrong statement. A. Higher temperature is employed in visbreaking than in thermal cracking. B. Pyrolysis is a mild thermal cracking process. C. Lead suceptibility of petrol produced by catalytic process is more than that produced by thermal cracking. D. Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process.
Crude oil is transported inland from oil field to refineries, mainly by the A. road tankers B. rail tankers C. underground pipelines D. none of these
Solvent used for dewaxing of petroleum products are A. furfural B. methyl ethyl ketone (MEK) C. propane D. both(b)&(c)
The pressure (kg/cm2 ) and temperature (°C) maintained in electrical desalters for crude oil are respectively A. 10 and 120 B. 1 and 200 C. 50 and 250 D. 10 and 300