Multiple choice

In oil wells, oil, water and gas are present in the ascending order of:

  1. gas, oil, water

  2. water, oil, gas

  3. water, gas, oil

  4. oil, gas, water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In an oil well, fluids separate based on density. Gas is the least dense and rises to the top, oil is in the middle, and water is the most dense, settling at the bottom.

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