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प्रश्न
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
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उत्तर
A candle burns in ajar of oxygen, but gets extinguished in nitrogen.
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संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
Give two uses of the following component present in air:
carbon dioxide
Name two air pollutants which affect our health.
Name two air pollutants which cause acid rain.
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
Name the following.
Inert gases in the air
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
The process of conversion of iron into hydrated form of oxides is called _______.
List five activities that are possible due to the presence of air.
