How is the following conversion carried out?

Methyl magnesium bromide $\to$ 2-Methylpropan-2-ol.

Name the reagent used in the following reaction:

Oxidation of a primary alcohol to aldehyde.

Name the reagent used in the following reaction:

 Bromination of phenol to $2,4,6$-tribromophenol.

Name the reagent used in the following reaction:

Benzyl alcohol to benzoic acid.

Name the reagent used in the following reaction:

Dehydration of propan-$2$-ol to propene.

Name the reagent used in the following reaction:

Butan-$2$-one to butan-$2$-ol.

Give IUPAC name of the following ether :