Questions

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.

How does crude oil come out of the earth ?

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

And then, a few glorious minutes ______________, it was time to reluctantly head ashore. ____________ time, the strokes were more fluid, the movements more relaxed. I turned back one last time ____________ hello to a clown fish, the reason why I came to the Andamans. As I watched, it played hide-and-seek _________ a sea anemone, before frisking away. Suddenly, I realised a kinship with the blue waters ___________ the Bay of Bengal.

I turned back one last time ____________ hello to a clown fish, the reason

Which of the following part of plant cell, is selectively permeable?

A cylindrical vessel of radius 4 cm contains water . A solid sphere of radius 3 cm is dipped into the water until it is completely immersed . The water level in the vessel will rise by

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

It is obviously wrong as the cost of school uniform, books and stationery, and transport, ________ all are under the monopoly of the school, are not included. ______________ private schools want additional money for special occasions like festivals, picnics, ______________ and projects. And they often recommend tuition for the children. None of this ______________ in this cost calculation. However, the family __________ this burden and these items add significantly to the revenue of private schools.

However, the family __________ this burden

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'.

A rainbow is cause by reflection, refraction, and dispersion (1)/ of light among water droplets resulting in a (2)/ spectrum of light appearing in the sky. (3)/No error (4)

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvementis needed, select "no improvement".

During the last decade the typewriters (had give) way to the computers.

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

I could see that the situation (have reversed).