Assertion (A): Crude petroleum or crude oil pumped out of oil well is not pure.

Reason (R): Petroleum is refined to get various fractions which can be used for a specific purpose.

Both A and R are true and R explains A

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Both A and R are true but R does not explain A

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A is true and R is false

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Both A and R are false

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Solution

The correct option is B Both A and R are true but R does not explain A
Fossil fuels are formed from the dead remains due to the carbonisation of plants and animals buried for a long time.
Crude petroleum is a liquid found within the Earth's crust that contains a mixture of hydrocarbons and traces of metals, making it impure. Crude petroleum is separated using fractional distillation into paraffin wax, petrol, diesel, paint solvent, lubricating oil, bitumen, etc.

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