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Modern Meaning of Organic Chemistry Organic chemistry is a chemistry of hydrocarbons and their derivatives where covalently bonded carbon is a necessary constituent. Berzelius
The nucleus of an element contains 9 protons. Its valency would be : (1) 1 (2) 3 (3) 2 (4) 5 Ans: 1
what is stability of colloids?
Uses of Iodoform or tri-iodomethane (a) Iodoform is utilized as a fire extinguisher under the name pyrene. Dense vapours form a protective layer on the burning objects and avoi
Explain why electrolysis of aqueous solution of NaCl gives H 2 at cathode and Cl 2 at anode. Write overall reaction
formula of chromium (III) and acetate
westron
Q. Show the solubility of double salts? The solubility of double salts of lanthanides such as 2Ln (N0 3 ).3Mg (N0 3 ) 2 .24H 2 0 and Ln2 (S0 4 ) 3 . Na 2 S0 4 .xH 2 0 increase
Q. why is sodium aluminates is a better coagulates then ferrous sulphates or alum? Ans. Sodium aluminates (NaAlO 2 ): It is better coagulant than FeSO 4 and alum because i
The orbital with maximum energy is: (1) 3d (2) 5p (3) 4s (4) 6d Ans: 6d
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