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प्रश्न
How will you show that air is dissolved in water?
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उत्तर
To show that air is dissolved in the water we take water in a pan and heat it. Just before it boils, you will notice some bubbles at the inner surface of the pan. These bubbles are formed because of air dissolved in water.
संबंधित प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
The area where a lot of fuel burns has more percentage of carbon dioxide.
Write ‘true’ or ‘false for the following;
The major component of air is oxygen.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Photosynthesis is a process by which green plants prepare their own food in the presence of sunlight and chlorophyll.
______ is the active component of air.
How do astronauts breathe when they go beyond the earth’s atmosphere?
Match the following:
| 1. | More industrial cities | a. | dust particles |
| 2. | Coastal areas | b. | Humidity |
| 3. | Rainy season | c. | Carbon dioxide |
| 4. | Windy places | d. | water vapour |
How to show the presence of carbon-di-oxide in the air?
The components of air which are harmful to living beings are ______.
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
Explain the following observations very briefly
An empty glass in fact is not empty.
