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प्रश्न
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.
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उत्तर
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संबंधित प्रश्न
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
How is greenhouse effect produced?
Give two uses of the following component present in air:
carbon dioxide
Mention five causes of air pollution.
Name two air pollutants which affect our health.
Tick (√) the correct alternative from the choice given for the following statement.
The substance which accelerates the speed of a reaction without itself undergoing any change is called
Name the following.
Inert gases in the air
What is global warming?
______ is important for all living creatures.
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
