Q.45 A blue solution of copper sulphate becomes darker when treated with excess of ammonia. This is

Q.44 The order of stability of complexes of ion Cu+2, Ni+2, Mn+2 and Fe+2 decreases in the order -

Q.43 Peptide bond group is characteristic of-

Q.41 Gabriel phthalimide reaction is used to prepare -

Q.40 In hypobromite reaction of amide, carbonyl carbon atom is lost as -

Q.39 In the reaction sequence : A -> B -> Acetone -> C. A, B and C are -