Questions

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.

How does crude oil come out of the earth ?

___, found in blood, is responsible for oxygen transportation.

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four andindicate it by selecting the appropriate option.

He was sworn _____ as the Prime Minister of our country

On 31 January 2018, the Ministry of Railway announced to set up a massive rail coach factory in which region of Maharashtra?

Involuntary muscles are controlled by the

Rickets is caused due to the deficiency of

In the last one decade, which one among the following sectors has attracted the highest foreign direct investment inflows into India?

In a period when an economy is facing price rise, and along with that there is slowing down of economy activities, this is case of _________.