New Guess Paper Chemistry 9th Class 2015 -16

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Guess Chemistry 9th short Q chemistry, physical chem., organic & inorganic chem., mixture, physical and chemical prop., valency, diff b/w compound & mixture, empirical & molecular formula, free radical, Avogadro number, mole., molecular ion, electronic configuration (cl-1), isotopes (hydrogen), Domineer Trides, branches of chemistry.Element.valency.Relative atomic mass.Empirical formula.molecular ions .free redicals.homoatomic and hetroatomic molecules,Avogadro’s number.Isotopes.Periods.Atomic radius.Shielding effect.Electron affinity.Electronegativity.Boiling points.Allotropy.