Assertion A : Hydrolysis of an alkyl chloride is a slow reaction but in the presence of NaI, the rate of the hydrolysis increases.

Reason R : I$$^{-}$$ is a good nucleophile as well as a good leaving group.

In the light of the above statements, choose the correct answer from the options given below

An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :

Match List I with List II

Choose the correct answer from the options given below :

In the following given reaction, 'A' is