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.

What is crude mineral oil?

Read each sentence to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. If there is no error, the answer is ‘No error’. (Ignore the errors of punctuation, if any.)

What is the chemical formula of Ozone?

In this question, the sets of numbers given in the alternatives are represented. The columns and rows of Matrix I are numbered from 0 to 4 and that ofMatrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., D can be represented by 02, 10,etc., and 'R' can be represented by 55, 67, etc. Similarly you have to identify the set for the word 'BEAR'.

Where did the telegraph line be laid first?

In which year was Communist Party of India - Marxist (CPI-M) founded?

An object travels 24 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

If a+b+c=15 and 1a+1b+1c=71abc, then the a3+b3+c3-3abc is