Discussion
Which of the following is not a byproduct of petroleum ?
Answer: B
Coke is not a product of petroleum.
Coke is obtained from coal. When coal is heated strongly in the absence of air (destructive distillation), it gives coke, coal tar and coal gas. Coke is almost pure carbon and is used in making steel and extracting metals.
Paraffin wax, bitumen and lubricating oil are all obtained by refining petroleum in a fractional distillation column, along with petrol, kerosene, diesel and LPG. Paraffin wax goes into candles and ointments, bitumen into roads and lubricating oil into machines.
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