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प्रश्न
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
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उत्तर
| Nitrogen | Fertilizer |
| Oxygen | Respiration in living animals |
| Carbon dioxide | Fire extinguisher |
| Dry ice | Refrigerator |
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संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
Tick (√ ) the most appropriate answer.
Magnesium burns with a dazzling white flame to form magnesium oxide, a powdery mass. The colour of magnesium oxide is :
Fill in the blanks
Oxygen is used in ___________the food to get _______.
Why do we see the sky and air clear and clean after rainfall?
Solvay process is a method to manufacture
Soda bottle bursts sometimes when it is opened during summer. Why?
Air contains a small amount of CO2, Water vapour, and some other gases like ______, etc.
“Air is not an elementary substance, but a composition”. Why?
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 produce oxygen during the process of making their own food.
