Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E+
(a)   Chlorobenzene, 2,4-dinitrochlorobenzene, p-nitrochlorobenzene
(b) Toluene, `p-H_3C–C_6H_4–NO_(2), p-O_2N–C_6H_4–NO_2`.

Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E^(+) . (i) chlorobenzene, 2, 4-dinitrochlorobenzene, p-nitrochloro benzene (ii) toluene, p-,H_(3)C-C_(6)H_(4)-CH_(3),p-H_(3)C-C_(6)H_(4)-NO_(2),p-O_(2)N-C_(6)H_(4)-NO_(2)

Arrange the following compounds in order of their decreasing reactivity with an electrophile, E^((+) i) Chlorobenzene ii) 2,4- dinitrochlorobenzene iii) p - nitrochlorobenzene

Arrange the following molecules in the correct order of decreasing C-C bond length: C_(2)H_(6), C_(2)H_(4), C_(2)H_(2), C_(6)H_(6)

Arrange the following in decreasing order of dipole moment (a) Toluene (2) m-Dichlorobenzene (3) o-Dichlorobenzene (4) p-Dichlorobenzene (b) BF_(3) (2) H_(2)S (3) H_(2)O (c ) cis-1 Chloropropene (2) Trans -1 -Chloropropene (3) 1,1-Dichloroethene .

Rank the following compounds in the order of decreasing reactivity for bromination C_(6) H_(5) - overset(o+)N Me _(3), C_(6)H_(5) - CH_(2) - overset(o+) N Me_(3) , C_(6)H_(5)- NMe_(2), C_(6)H_(5)- CH_(3)