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Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell. It is a complex mixture of many different substances, each with its own individual qualities. Most of them are combinations of hydrogen and carbon in varying proportions. Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas. Mineral oil originates from the carcasses of tiny animals and from plants that live in the sea. Over million of years, these dead creatures form large deposits under sea­bed and ocean currents cover them with a blanket of sand and silt. As this material hardens, it becomes sedimentary rock and effectively shuts out the oxygen, thus preventing the complete decomposition of the marine deposits underneath. The layers of sedimentary rocks become thicker, and heavier. Their pressure produces heat, which transforms the tiny carcasses into crude oil in a process that is still going on today.

What is crude mineral oil?

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

The King Juan Carlos of Spain(A)/arrived in London today(B)/for a three day visit(C)/No error(D)

In September 2017, Government of India approved the revamped ‘Khelo India Programme’ at a cost of Rs 1756 crore for the period ______.

Which  one  of  the  following  statements  is not correct?

In which generation of computer was the mechanical language for programming used?

If an object is placed at the center of curvature of a concave mirror, then the image formed will be

A conductor having some appreciable resistance is called a

Bridgmanite is