Most stable carbocation formed from `(CH_(3))_(3)C-Br,(C_(6)H_(5))_(3)CBr,(C_(6)H_(5))_(2)CHBr` and `C_(6)H_(5)CH_(2)Br` would be

The S_(N)1 reactivity of the following halides will be in the order (i) (CH_(3))_(3)CBr (ii) (C_(6)H_(5))_(2)CHBr (iii) (C_(6)H_(5))_(2)C(CH_(3))Br (iv) (CH_(3))_(2)CHBr (v) C_(2)H_(5)Br

The S_(N^(1)) reactivity of the following halides will be in the order: (i) (CH_(3))_(3)C-Br (ii) (C_(6)H_(5))CHBr (iii) (C_(6)H_(5))_(2)C(CH_(3))Br (iv) (CH_(3))_(2)CHBr (v) C_(2)H_(5)Br

Predict the order of reactivity of the following compounds in S_(N)1 and S_(N)2 reactions : (a) The four isomeric bromobutanes (b) C_(6)H_(5)CH_(2)Br, C_(6)H_(5)CH(C_(6)H_(5))Br, C_(6)H_(5)CH(CH_(3))Br, C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br

Predict the order of reactivity of the following compounds in S _(N)1 and S_(N)2 reactions: (i) The four isomeric bromobutanes (ii) C_(6)H_(5)CH_(2)Br, C_(6)H_(5)CH(C_(6)H_(5))Br, C_(6)H_(5)CH(CH_(3))Br, C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br

The correct order of reactivity of the compounds (I) C_(6)H_(5)H_(2)(Br) , (II) C_(6)H_(5)CH(C_(6)H_(5))Br , (III) C_(6)H_(5)CH(CH_(3))Br , (IV) C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br in the increasing order of reactivity in S_(N^(2)) reactions is

Amongest the following maximum number of compounds which give iodoform test are CH_(3)CONH_(2),CH_(3)COCl, CHCOOH,(CH_(3)CO)_(2) C_(6)H_(5)COCH_(3),C_(6)H_(5)CH_(2)CHO , C_(6)H_(5)(OH)CH_(3) C_(6)H_(5)CH_(2)CH_(2)OH,(CH_(3))_(2)C=CHCOCH_(3) CH_(3)COCH_(2)COOC_(2)H_(5)