Differentiate between modern periodic table and mendeleevs table?
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What is the monomer of polyethene?
How is electricity generated from water ?
What will happen when a big piece of quick lime is dropped in water ?
Explain the following ? Matter, Element, Atom, Compound, Molecule, Mixture, Physical change, Chemical change
however ozone is havier than oxygen still ozone is up there in sky why?
Is diamond element ?
why helium does not react with other elements?
Why is alum added to purify water ?
What is a potentiometer titration?
Why cooling is produced when a wet ?khus khus? screen is hung on the doors and windows ?
Explain about Atomic Weight ?
What is the difference between fractionation and distillation?