Question

In India, petroleum was first discovered at __________ in Assam.
A. Digboi
B. Bombay High
C. Ankaleshwar
D. Lakhimpur

Answer 1

Hint: Petroleum is a fossil fuel used for the formation of Petrol, Liquid Petroleum Gas, Kerosene, Diesel, Paraffin wax, etc. Petroleum oil wells are located using the geophysical imaging sensors and then oil drills are used to extract oil and gas.

Complete answer: Petroleum in India is mainly found in the states of Gujarat and Assam along with certain offshore oil fields in river basins.
The option A, Digboi is the place where petroleum was first discovered in Assam. It was in 1889, that first oil extraction started but the discovery goes as early as 1825 by a British Lieutenant Wilcoax. This accidental discovery was utilized to its fullest by British as several wells were dug by the end of 19th c. and also the first oil refinery in Asia was set up here. Assam with help of these refineries emerged as the birth place for Oil India Private Limited and Oil and Natural Gas Commission (ONGC).
The option B, Bombay High is an offshore field being another important source of petroleum in India. It was discovered late in 1974 in the Arabian Sea and is currently operated under ONGC.
The option C, Ankaleshwar is located in Gujrat and is home to several oil refineries. Alongside, ONGC has its office here for managing the refineries.
The option D, Lakhimpur is located in Assam as well, again managed by ONGC. It has few petroleum oil wells but they remain very small in spread.
Hence, option A is the correct answer.

Note: The first oil well discovered worldwide was located in Pennsylvania at Titusville. It was drilled in 1859 by Edwin Drake. Presently, Venezuela, Saudi Arabia, Canada and Iran have more than 50% of the world's oil reserves.