Advertisements
Advertisements
Question
State a reason why there is a balance in the amount of carbon dioxide in the air, even though carbon dioxide is released into the atmopshere by various processes.
Advertisements
Solution
By the way of photosynthesis in plants which occurs during daytime, carbon dioxide and water in the presence of sunlight and chlorophyll is changed into carbohydrates and oxygen is released out.
\[\ce{\underset{\text{(in air)}}{Carbon dioxide} + Water ->[sunlight][chlorophyll]\underset{\text{(glucose)}}{Carbohydrates} + Oxygen}\]
Hence, oxygen in the air is renewed by photosynthesis, and therefore the amount of oxygen in the air does not get depleted or removed from the air.
RELATED QUESTIONS
Briefly state the importance of Carbon dioxide.
Define the following:
Combustion.
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
Fill in the blank
Aquatic plants and animals use _________ in water.
Name the following:
The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.
Write the percentage of the gases present in air.
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
List out the uses of nitrogen.
The component of air used by green plants to make their food, is ______.
The Scottish chemist ______ discovered carbon dioxide is present in air.
