Assertion : t -Butyl methyl ether is not prepared by the reaction of t -butyl bromide with sodium methoxide. Reason : Sodium methoxide is a strong nucleophile.

Step-by-step solution

In Williamson's synthesis, if a tertiary alkyl halide is used, an alkene is the only reaction product and no ether is formed. It is because alkoxides are not only nucleophiles but also strong bases as well. They react with alkyl halides leading to elimination reaction.