Questions

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.
Nisha said to Swati, " Will you help me in my project just now?"

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select ‘No Error’.

Earth’s resources have to be protected and sustain and we need to (1)/ share our resources across species as we all are (2)/ interconnected as one giant living organism. (3)/ No error (4)

Pitch Black Exercise is an air exercise between

In December 2017, SEBI tightened rating agency norms. The net worth requirement for rating agencies has now been increased from Rs 5 crore to ______.

Who is the current supreme commander of Indian Defense forces?

A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is

Name the international treaty designed to protect the ozone layer from CFCs.

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.

Sedimentary rocks leads to the formation of oil deposits because