Use of Components of Air
Use of Components of Air: Overview
This topic explains concepts such as Role of Oxygen in Air, Availability of Air at High Altitudes, Nature of Nitrogen, Role of Nitrogen in Plants, etc.
Important Questions on Use of Components of Air
The solid carbon dioxide is also called _____.
Carbon dioxide plays an important part in vital plant and animal processes, such as _____.
Carbon dioxide plays an important part in vital plant and animal processes, such as _____ .
_____ is a cold white dense mist produced by solid carbon dioxide in the air.
The gas that does not involve in respiration of humans is_____.
Write two physical properties of nitrogen gas.
The percentage of nitrogen in the air is_____.
The major part of the air which does not support combustion is
Planes on long journeys sometimes fly at the base of the stratosphere. They do not fly higher than this because they remove ozone from the stratosphere. Give one advantage and one disadvantage of flying at a high altitude.
Plants prepare their food by the process of _____.
Choose the right word and fill in the blank provided below.
The temperature of the air _____ as we go higher from the surface of the earth. (decreases, increases)
Trees absorb carbon dioxide and release oxygen.
Name the gas used by green plants to prepare their food.
The plants take in this gas to prepare food _____.
Fixation of atmospheric nitrogen reduces soil fertility.
