Questions

___ are the carriers of heredity material.

Slow-growing large coloured patches on the bark of trees are the examples of symbiotic life forms called ______.

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best express the same sentence in Indirect/Direct speech.

The father said to the son,"Why do you not start preparing for the examination this month?

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.

kinship with the blue waters ___________ the Bay of Bengal.

An object of 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm toget a real image at a distance of 60 cm from the mirror. What is the height of the image formed?

Mechanical energy is the sum of

The G-20 Summit in November 2015 was organized in which European Country?