For which of the following processes is air essential?

The chemical formula of carbon dioxide is

Match the statements of Column A with those of Column B.

The nitrogen gas in earlier days was named

The ratio of nitrogen to oxygen by volume present in the air is

Identify the products (X and Y) obtained in the reactions below.
Mercury (II) oxide  X + Y

Which of the following is/are not the properties of air?
(i) The air is transparent in nature.
(ii) The air is a good conductor of heat and electricity.
(iii) Air is highly compressible in nature.
(iv) The liquid air has a fixed boiling point.

Which of the following components is not present in the air?

Which of the following characteristics does not belong to air?

Various components of air can be separated by

Which of the properties of air can be proved from the following picture?

The part of the air which acts as active air consists of

Rita performed an experiment to prove that nitrogen and oxygen are the major constituents of the air. Arrange the following steps involved in this experiment orderly.
(i) Fill the container with some water.
(ii) Mark five marks above the surface of the water on the jar at equal distances shown in the figure below.
(iii) Place an empty, inverted dry glass jar over it.
(iv) Lift the jar, light the candle, and cover it with the inverted glass jar.
(v) Take a glass container and fix a candle at the center of the bottom.

Oxygen gas which is found in the air is a supporter of

John performed one experiment. Find out the composition of air. He took the test tube fitted with a rubber cork. Then he poured some fresh lime water into it. Then he fitted the two long-bent tube through the two holes of rubber cork. He blew the air by an air pump through the long tube. The lime water present inside turns into a milky solution. This shows that the air contains

The main component of the air is

Oxygen is essential for the existence of life on earth. but oxygen is not the only element that air is composed of.