Questions

Which one of the following institutions is also called "World Bank" ?

A broadcasting station transmits waves with a frequency of 71 x 104 Hz and a speed of 3 x 108 m/s. The wavelength of the wave is

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

to allay the sorrow or grief

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

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".

We, on the other hand, (is amused) by the number of channels it had to offer.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Be in the air

A passage with three blanks, followed by five options, each containing one word, is given. Choose the word that can fill all the three blanks.
The ability of humans to ___________ the landscape and recognize the consequences of doing so puts us in a peculiar position. There are several animals on earth that show this same kind of intelligence. Some animals have extensions to ___________ their environment and some do not. As a species we are assigned the duty to provide and proliferate. Our goal is to achieve stability for ourselves and our kin. However, we also have an obligation to maintain the environment, as we depend on the resources and services it provides. The question then becomes:
what is our role in nature? Do we have the right to _________ the land, factory farm animals, and pollute waterways? Or do we have an obligation to reduce our numbers and merely subsist? In order to answer these questions, we must rely on our knowledge of Earth, evolution, and our influence on the environment.

Crystallisation is an example of?