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प्रश्न
Name the following:
An inert gas which has a low boiling point and is used for producing very low temperatures
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उत्तर
Helium
संबंधित प्रश्न
Give reason:
A burning candle stops burning if covered with a glass tumbler
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
Give word equation for the following conversion:
Nitric oxide to nitrogen dioxide
Why do we see the sky and air clear and clean after rainfall?
Carbon dioxide with water changes
Air also contains a small amount of carbon-di-oxide, water vapour, and some other gases like argon,
______ is responsible for making clouds.
Tri oxygen molecule is known as ______.
Explain the following observations very briefly
An empty glass in fact is not empty.
