Questions

In a hydrogen atom, an electron moves in an orbit of radius 5.0 x 10-11 m with a speed of 2.2 x 106 m/s. What is the equivalent current? (Electronic charge = 1.6 x10-19 C)

Which Indian PSU has launched the country's first 100 Octane petrol?

Green House Effect' means

Which of the following is Study of fossils ?

In Computer programming there is set of subroutinedefinitions, protocols, and tools for building software andapplications. Which among the following is a term for setsof requirements that govern how one application can talkto another?

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?

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'.

Thank you for (1)/ getting me (2)/ of the hook. (3)/No Error (4)

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

Sneer