Multiple choice

Which of the following gases occur(s) deep under the crust of earth either alone or along with oil above the petroleum deposits?

a. Coal gas b. Natural gas c. Petroleum gas

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. Natural gas occurs deep under the crust of earth either alone or along with oil above the petroleum deposits.

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