Advertisements
Advertisements
प्रश्न
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
Advertisements
उत्तर
Respiration and combustion are the processes which maintain the balance between oxygen and CO2 in the air.
- Respiration: Respiration is a chemical process that takes place in all living beings. In this process, oxygen present in the inhaled air reacts with the digested food material in the body. This results in the release of energy, carbon dioxide, and water.
- Combustion: Burning or combustion is a process in which a substance reacts chemically with oxygen and gets oxidised, with the release of energy in the form of heat and light. It is a fast process. During the process of burning, along with energy, carbon dioxide, and water vapour are also produced.
APPEARS IN
संबंधित प्रश्न
What do you observe when a burning candle is covered with an inverted jar.
Give two uses of the following component present in air:
carbon dioxide
How is air useful to agriculture?
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
State what do you understand by the term ‘air’. Explain its importance to mankind.
Describe a simple experiment with the help of a diagram to show that Air is highly compressible
A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
