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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
विकल्प
is a slow process
is a natural and continuous process
takes place at body temperature
all of the above
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उत्तर
all of the above
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संबंधित प्रश्न
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. | (a) Oxygen |
| 2. A gas used for filling weather observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
How is air useful to water boats?
What is air pollution?
Name three greenhouse gases.
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
Answer in your own words.
What are the various constituents of air? Write their uses.
State whether the following statement is true or false.
The pressure exerted by air is called atmospheric pressure.
Fill in the blank:
The gas evolved as a product of combustion as well as respiration is ______.
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
What is global warming?
