Fresh form of water is obtained from?
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How is temporary hardness be removed?
State beer’s law.
What is the reaction that occurs during the titration?
What is the monomer of polyethene?
While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?
How many elements have been discovered ?
Why it is advised to boil water before drinking ?
What is the role of mercuric sulphate?
What is electroplating ?
What are the products formed after cod analysis?
however ozone is havier than oxygen still ozone is up there in sky why?
What is the composition of air ?