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Question
When an oil well is drilled through rocks _______ comes out first.
- coal gas
- marsh gas
- natural gas
- gas carbon
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Solution
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An oil well is a boring in the Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is produced along with the oil. A well that is designed to produce mainly or only gas may be termed a gas well.
Thus Option C is correct.
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