Oil is forced out of the earth during the primary recovery process due to:

Earth's magnetic force.

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Natural pressure build-up inside the earth.

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Low viscosity of oil.

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Earth's pull.

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Solution

The correct option is B
Natural pressure build-up inside the earth.

High pressure is built-up in the oil well due to layers of rocks above them. When a well is digged, it releases oil with great pressure. This is similar to air being released when a balloon is punctured.

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Similar questions

Oil is forced out of earth in primary recovery process due to

In the primary recovery process, oil is forced out due to the natural pressure build-up on the rocks.

The approximate amount of oil left in an oil well after primary recovery process is:

N H_{3}

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