Question

For what purpose does the cores for drill are examined?

(a) For the fossil fuels occurring in strata

(b) For mapping the age of rocks

(c) For fossil formation and evidence of non-porous rocks

(d) For checking the intensities of earth’s magnetic field

This question was addressed to me in final exam.

This is a very interesting question from Petroleum in chapter Fuels and Combustion of Engineering Chemistry II

Answer 1

Correct answer is (c) For fossil formation and evidence of non-porous rocks

Easiest explanation: Drilling provides the final proof for the occurrence of oil-bearing strata. When the existence of oil deposit is proved, drilling is continued until the depth of the oil or oil-bearing strata is confirmed.