Differentiate between modern periodic table and mendeleevs table?
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Mention the formula to calculate ph of a solution?
Explain extraction of ephedrine from a mineral block?
What is hydrogenation of oils ?
what is the difference between base & nucleophile?
Difference between heavy hydrogen , Atom Hydrogen and Hydrogen Ion ?
Why do clothes dry quicker in wind than in still air ?
Which expands to the greatest, when heated : silids, liquids or gases ?
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who invented the first projector?
Why is acetic acid added?
What is Oxidation and Reduction?
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 nothydrogen power does it ph?