Assertion :We see oil layer above water layer Reason: Petroleum liquids API gravity is greater than 10

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Oil layer is above on water layer because of API gravity. API gravity is a measure of the density of petroleum liquid compared to water. If a petroleum liquids API gravity is greater than 10, it is light, and floats on top of water. If the API gravity is less than 10, it is heavy, and sinks in water.

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