Which reagent is used to convert ethanol into ethyl chloride?

The major product in the following reaction sequence is:

Identify the correct products when ethanol reacts with $PCl_5$.

Which among the following reactions does $NOT$ form alkyl halides?

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.

Which of the following compounds is obtained by using the Finkelstein reaction?