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प्रश्न
Name the following.
Inert gases in the air
उत्तर
Helium, Neon, Argon, Radon, Xenon, Krypton
संबंधित प्रश्न
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
Name two important processes supported by oxygen present in air.
Mention five causes of air pollution.
Fill in the blank
Polluted air is harmful to ____.
What will happen if the number of vehicles and factories in your surroundings increases?
List five activities that are possible due to the presence of air.
Wind does not help in the movement of which of the following?
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Do you think tiny bubbles will appear on heating the water taken out from the bottle? Justify your answer.
