Which of the following cannot be considered as a step of mechanism in chain reaction of methane with `Cl_(2)`?

Which of the following steps represents chain terminating step in the mechanism of chlorination of methane ?

Which of the folllowing reactions cannot be used for the preparation of methane?

Which of the following is not the chain propagation step in the chlorination of alkane?

Which of the following reaction will not give methane?

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction) ?

Which of the following reaction pairs constitutes the chain propagation step in chlorination of methyl chloride ?