Questions

Which layer of the earth's atmosphere contains the ozone layer?

A level of atmosphere which is composed partly of electrons and positive ions is called

___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth.

Sulphur and Chlorine can have what type of a bond?

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

Bangladesh does not share its border with which Indian state?

Which of the following is the largest group of animals?

In this section, each of the following sentences has a blank space and four words are given below it. select the word or group of words you consider most appropriate for the blank space and indicate your response on the Answer Sheet accordingly.

Most of the students have forgotten to bring their certificates; they will be _______ by the Principal for this reason.