In a base-band transmission, the entire bandwidth of the cable is consumed by a single signal. In broadband transmission, signals are sent on multiple frequencies, allowing multiple signals to be sent simultaneously.
The characterisation factor of crude petroleum oil is around A. 3 B. 11 C. 22 D. 28
Sour crude means the __________ bearing crude. A. asphalt B. sulphur compounds C. wax D. nitrogen compounds
Which of the following has the highest flash point of all? A. Diesel B. Kerosene C. Petrol D. Furnace oil
The order of preference for feedstock to a catalytic reformer is A. catalytic naphtha - coking naphtha - virgin naphtha. B. coking naphtha - virgin naphtha - catalytic naphtha. C. virgin naphtha - catalytic naphtha - coking naphtha. D. virgin naphtha - coking naphtha - catalytic naphtha.
True vapour pressure of a petroleum fraction __________ Reid vapour pressure. A. is less than B. is more than C. is same as D. may be either more or less than
The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to A. obviate catalyst poisoning. B. maintain the reaction temperature. C. sustain the reactor pressure. D. hydrogenate the feed stock.
Increase in the specific gravity of petroleum products indicates A. decrease in paraffin content. B. increase in thermal energy per unit weight. C. increase in aromatic content. D. higher H/C ratio.
'Solvent naphtha' used mostly as a solvent in paints and perfumery is produced by the __________ of virgin naphtha into small boiling range cuts. A. steam reforming B. distillation C. desulphurisation D. none of these
Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with A. methyl alcohol B. ethyl alcohol C. methane D. ethane
The main aim of cracking is to produce A. gasoline B. lube oil C. petrolatum D. coke
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