[" 7.Consider the following carbocations "," II."C_(6)H_(5)CH_(2)CH_(2)],[I*C_(6)H_(5)CH_(2),II*C_(6)H_(5)+(CH_(3))_(2)],[,III_(6)C_(6)H_(5)CHCH_(3)],[" The correct sequence for the stability of these is: "],[[" (a) II "

Consider the following carbocations (I) C_(6)H_(5)overset(+)CH_(2) , (II) C_(6)H_(5)CH_(2)overset(+)CH_(2) (III) C_(6)H_(5)overset(+)CHCH_(3) , (IV) C_(6)H_(5)overset(+)C(CH_(3))_(2) The correct sequence for the stability of these is

Consider the following carbocations (I) C_(6)H_(5)overset(+)CH_(2) , (II) C_(6)H_(5)CH_(2)overset(+)CH_(2) (III) C_(6)H_(5)overset(+)CHCH_(3) , (IV) C_(6)H_(5)overset(+)C(CH_(3))_(2) The correct sequence for the stability of these is

Consider the following carbocations : (I) C_(6)H_(5)overset(+)(C )H_(2) (II) C_(6)H_(5)CH_(2)overset(+)(C )H_(2) (III) C_(6)H_(5)overset(+)(C )HCH_(3) (IV) C_(6)H_(5)overset(+)(C )(CH_(3))_(2) The correct sequance of the stability of these is :

Consider the following carbocations I) C_6H_5-overset(o+)CH_2" " II) C_6H_5-CH_(2)overset(o+)CH_2 III) C_6H_5-overset(o+)(CH)-CH_3" " IV) C_6H_5-overset(o+)C(CH_3)_2 The correct sequence of stabilities is :

Which of the following undergoes haloform reaction? (i) CH_(3)CH_(2)COCH_(2)CI (ii) C_(6)H_(5)COCH_(3) (iii) C_(6)H_(5)COCHI_(2) (iv) CH_(3)CH_(2)COCCI_(3)

Aniline in a set of reactions yielded a product B (a) C_(6)H_(5)CH_(2)NH_(2) (b) C_(6)H_(5)NHCH_(2)CH_(3) (c) C_(6)H_(5)NHOH (d) C_(6)H_(5)CH_(2)OH

Arrange in the order of increasing S_(N)1 reactivity : C_(6)H_(5)CH_(2)Cl(I), (C_(6)H_(5))_(3)C Cl(II) , C_(6)H_(5)CH_(2)CH_(2) (III).