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Question
Name the following:
The component of air which is present more in industrial areas.
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Solution
Carbon monoxide, sulphur dioxide, oxides of nitrogen, hydrogen sulphide, dust particles.
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Answer the question put against the following constituents of air :
Water vapours : Explain their role in modifying the earth’s climate.
Fill in the blank :
________ is the most abundant inert gas present in air.
State three uses of water vapour in the air.
What is the significance of water vapour in air?
Name the following:
The product of respiration released in exhaled air, other than carbon dioxide.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The percentage of carbon dioxide in the air is between 0.2 to 0.4%.
_______ and ______ are the two gases, which when taken together, make up about 99 percentage of air.
- Nitrogen
- carbon-di-oxide
- Noble gases
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How do the roots of land plants get oxygen for breathing?
______ is responsible for making clouds.
Explain the following observations very briefly
An empty glass in fact is not empty.
