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प्रश्न
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
उत्तर
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संबंधित प्रश्न
What is wind?
Give two uses of the following component present in air:
oxygen
Give two uses of the following component present in air:
nitrogen
Give two uses of the following component present in air:
carbon dioxide
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
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
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Air is a mixture and not a compound since the components of air cannot be separated by physical methods.
List five activities that are possible due to the presence of air.
Cool and soothing wind: Breeze.
uproot trees wind: ______.
Match the items of Column I with the items of Column II
| Column-I | Column-ll | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of airflow |
| (e) | Wind | (v) | Prevent dust particles |
