Questions

Atoms of the same element can differ in

If i wanted to reach the South Atlantic from the South Pacific while touching South America , I would have to use

Who is the Formula one driver, has won the Hungarian Grand Prix for the 6th time?

While running DOS on a PC, which command would be used to duplicate the entire diskette?

During what stage of photosynthesis is O2 produced?

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?

Which organelles supply energy to the cell?

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.

Naive