Questions

Non-metal oxides are usually

Short run marginal cost curve cuts the average variable cost curve from _______ at the minimum point of average variable cost.

The Lachman test is used to evaluate stability of the

Human blood platelets releases ___ which helps in clotting of blood.

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

In the following passage some of the words have been left out. Read the passage carefully and choose the correct answer for the given blank out of the four alternatives.

We are ____ in a time of great and _____changes. The most obvious _____of the modern world is the _____development of science and technology. This has given man a deeper _____of nature.

The most obvious______ of the modern world.

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".

He likes to drive his car at a speed of eighty kilometres each hour.

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