Advertisements
Advertisements
प्रश्न
What is global warming?
Advertisements
उत्तर
The increased greenhouse effect is caused due to increase in air pollutants and it results in the average increase in temperature of the atmosphere. This is called Global warming.
APPEARS IN
संबंधित प्रश्न
How is greenhouse effect produced?
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. |
(a) Oxygen |
| 2. A gas used for filling weather observation balloons. | (b) carbon acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphur acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
What is wind?
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
State the meaning of the term atmosphere.
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
Fill in the blank:
Nitrogen of the air is utilized by plants for formation of _____.
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
The layer of air around the earth is known as ______.
Explain the following observations very briefly
A firki does not rotate in a closed area.
