What is wave number?
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How is temporary hardness be removed?
Why is the percentage of oxygen today the same as it was thousands years ago, even though the whole world inhals it?
If you are given two liquids, which look like water, how can you, by two physical tests, prove which one of them may be water ?
Explain the Electronic Theory of Valency?
why PH scale range is 14? why it is not less or not greater than 14? solution of HCl or hydrogen containing liquid has a PH. but if the solution is KMnO4 here not hydrogen power does it PH? explain plz....
State beer’s law.
Explain the Chemical Manures ?
Why can?t snowballs be made in very cold weather ?
What is chemical oxygen demand?
What are the factors that affect the viscosity of a liquid?
Explain the Molecule?
how to do heavy metal test for colour sample?