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प्रश्न
The components of air which are harmful to living beings are ______.
विकल्प
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.
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संबंधित प्रश्न
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
Briefly state the importance of Nitrogen.
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Write down the composition of three main gases present in air by volume.
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
Why do we see the sky and air clear and clean after rainfall?
Air is made up of oxygen only.
How do the roots of land plants get oxygen for breathing?
The air in coastal areas have more oxygen.
______ is used as a substitute for compressed air in tyres.
