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प्रश्न
The components of air which are harmful to living beings are ______.
पर्याय
nitrogen and carbon dioxide.
dust and water vapour.
dust and smoke.
smoke and water vapour.
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उत्तर
The components of air which are harmful to living beings are dust and smoke.
Explanation:
Dust and smoke are harmful to living beings because if they enter our body, they can cause respiratory problems.
APPEARS IN
संबंधित प्रश्न
Tick (√) the most appropriate answer.
The humans pollute the air by :
Name and briefly explain four ways by which pollution of air is caused by humans.
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
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.
Complete the statement given below by filling in the blank with the correct word from the words given:
The product formed which is common to both combustion and respiration is ______.
Give word equation for the following conversion:
Nitrogen of the air to nitric oxide
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Make sentences using the given set of words.
99%, oxygen, nitrogen, air, together
