Advertisements
Advertisements
प्रश्न
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
Air is a ______ of some gases.
Advertisements
उत्तर
Air is a mixture of some gases.
APPEARS IN
संबंधित प्रश्न
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 observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric 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 greenhouse effect?
Why can’t we see air?
Fill in the blank
Although we cannot see air, we can ___it.
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
What will happen if the number of vehicles and factories in your surroundings increases?
What is the importance of air in transmission of sound?
State the meaning of the term atmosphere.
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
Mention two advantages of wind energy.
