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प्रश्न
Statement given below is incorrect. Write the correct statement :
Helium gas at low pressure is used for filling electric bulbs.
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उत्तर
Argon gas at low pressure is used for filling electric bulbs.
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संबंधित प्रश्न
Answer the question put against the following constituents of air :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
What is nitrogen-fixation?
What is the significance of water vapour in air?
Write ‘True’ or ‘False’ in front of following statement.
The catalyst used in laboratory preparation of oxygen gas from hydrogen peroxide gas is magnesium oxide
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
Give word equation for the following conversion:
Nitrogen of the air to nitric oxide
How to show the presence of carbon-di-oxide in the air?
______ is responsible for making clouds.
Carbon dioxide gas is ______.
A ______ gas that is used to remove carbon impurities from the steel.
