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Q.

Which of the following statements is not correct?

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a

The order of reactivity of halogen towards alkanes is F2>Cl2>Br2

b

The reaction of Cl2 and CH4 proceeds via ionic mechanism.

c

Oxygen acts as an inhibitor in the reaction between CH4 and Cl2

d

Iodine does not react with CH4 at all.

answer is B.

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Detailed Solution

(b) The reaction proceeds via free radical mechanism.

(C) This is due to the formation CH3OO radical which is less reactive than CH3 radical.

(d) It is due to the fact, that the reaction I+CH4HI+CH3 is highly endothermic ΔH=138kJmol1 

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