In the given reaction:
$CH_3-CH_2-COOH \xrightarrow[(ii) \ Br_2/\Delta]{(i) \ AgNO_3} [X]$
$[X]$ will be:

The starting substance for the preparation of $CH_3I$ is

Which product is obtained when bleaching powder is distilled with acetone?

$A$ Grignard reagent may be made by reacting magnesium with

Identify the name of the reaction in which alkyl fluorides are prepared by heating alkyl bromide or alkyl chloride with metallic fluorides like $AgF$,$Hg_2F_2$,$CoF_2$,or $SbF_3$.

Finkelstein reaction is used for the synthesis of