Questions

What is the common name of the solution of calcium hydroxide?

In which one of the following places was Asia’s first Export Processing Zone (EPZ) set up?

The summer capital of J&K Government is

The author of the book "The People's President: Dr. A P J Abdul Kalam" is:

During their rule the British persuaded or forced cultivators in Madras to grow __________.

Who was the first ruler of Pala dynasty?

The ratio between Ram's age and Rahim's age is 10:11. What is the age of Rahim in percentage of Ram's age

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.

The time taken for the marine deposits to harden into rocks is