Questions

Which is a homologous chromosome pair?

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?

Where in South India has the largest collection of Roman coins been found?

The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by

Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth _______.

Which year was declared as the National Mathematical Year as a tribute to Mathematician Srinivasa Ramanujan?

To keep warm, polar bears have a layer of ________ under their skin.

Which among the following statements about the earth , is not true?