Questions

An economic system combining private and state enterprise is called as _____

The shape of the outer part of the ear is like a __________.

Atomic number of which of the following elements is greater than that of Magnesium

The Chemical formula of Ammonium oxalate is _____.

In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.

Whoop it up

In which sport did India win Bronze medal at Rio Olympics 2016?

Which of the statements given below are correct?
1. The author of the novel 'Air' is Geoff Ryman.
2. The author of the novel 'Ulysses' is James Joyce.
3. The author of the novel 'The Great Gatsby' is F. Scott Fitzgerald.

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

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.

From where does mineral oil originate?