Q.

Which of the following means rock oil?


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a

Minerals

b

Petroleum

c

Black oil

d

Gasoline  

answer is B.

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Detailed Solution

Petroleum refers to rock oil.
Petroleum is a thick, black liquid that is the precursor to the gasoline that keeps our car running and the oil that prevents your bicycle from squeaking. Petroleum is derived from the Latin words "Petr" and "Oleum." "Petra" implies "rock", and "Oleum" implies "oil" in this context. As a result, the term petroleum refers to rock oil. Since it was produced through the decay of organic matter over millions of years, petroleum is a fossil fuel. It's a blend of gasoline, diesel, wax, kerosene, plastic, and lubricants.
 
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Which of the following means rock oil?