Questions

Pentane has _____ structural isomers.

The series of processes by which nitrogen and its compounds are inter-converted in the environment and in living organisms is called _____ .

Which one of the following is a cation?

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.

The kangaroo carried her baby in her pouch.

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

Cross that bridge when you come to it.

Select the word with the correct spelling.

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

Mutual discourse

Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain period. Find the displacement (in m) of the body in that period.