📊 Petroleum Refinery Engineering
Q. Petroleum deposits are detected by the
  • (A) Oil seepage at the surface of the earth
  • (B) Measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth
  • (C) Age & nature of rocks inside the crust of the earth
  • (D) All of the above
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✅ Correct Answer: (D) All of the above

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