Oil is used to detect pollution by oil paper experiment beacuse

It is easily absorbed by paper

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It can easily attract the pollutants

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It is cheaper

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Both A and B

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Solution

The correct option is D Both A and B
The oil-paper test is the test to detect the presence of hydrocarbons. The contaminants and the pollutants which are composed of the hydrocarbons in the soil, water, and air can be detected. The oil can be absorbed by the test paper. The property of the porous paper attracts the pollutants to get absorbed. The cost involved in this method is less compared to the other tests.
Thus, the correct answer is option D.

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