$C_2H_5Cl + AgF \longrightarrow C_2H_5F + AgCl$
The above reaction is called:

Grignard reagent is prepared by the reaction between

Assertion : Alkyl iodide can be prepared by treating alkyl chloride/bromide with $NaI$ in acetone.
Reason : $NaCl/NaBr$ are soluble in acetone while $NaI$ is not.

The major product in the following reaction sequence is:

$Cl_2$ reacts with $CS_2$ in the presence of an $I_2$ catalyst to form:

When toluene is treated with $Br_2$ in the presence of sunlight,it mainly gives: