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प्रश्न
Write ‘true’ or ‘false for the following;
The composition of air was discovered by Lavoisier.
विकल्प
True
False
उत्तर
True
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संबंधित प्रश्न
Define the term smog.
Write fully balanced equation for the following :
CO2 + H2O →
Give word equation for the following conversion:
Nitrogen of the air to nitric oxide
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“Air is not an elementary substance, but a composition”. Why?
______ gas is essential for the proper growth of all plants.
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
Explain the following observations very briefly
An empty glass in fact is not empty.
