Q29 of 97 Page 133

(a)



(b)



(c)



As explained in question 27, presence of electron releasing groups like –CH3 cause reduction in reactivity of aryl halides. Hence the increase in methyl groups reduces the reactivity. The reactivity order is (a) > (b) > (c). The correct option is (iii).

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27

(a)



(b)



(c)



 28

(a)



(b)



(c)



 30

Which is the correct increasing order of boiling points of the following compounds?

1-Iodobutane, 1-Bromobutane, 1-Chlorobutane, Butane


 31

Which is the correct increasing order of boiling points of the following compounds?

1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene