3,3-dimethylbutan-2-ol losses a molecule of water in the presence of concentrated sulphuric acid to give tertramethylethylene as a major product. Suggest a suitable mechanism.

The major product formed when 3,3 -dimethylbutan -2 -ol is heated with concentrated sulphuric acid is

Benzoic acid on treatment with hydrazoic acid (N_(3)H) in the presence of concentrated sulphuric acid gives:

A : When 3,3-dimethyl butan - 2 - ol is heated in presence of concentrated H_(2)SO_(4) then 2, 3-dimethyl but -2-ene is formed as major product . R : In this reaction , carbocation is formed as an intermediate

Phenol is heated with concentrated sulphuric acid at 110^(@)C . The major product formed is

RCH = CH_(2) adds on water in the presence of dilute sulphuric acid or phosphoric acid to form

The major product formed when a 3-methyl butan-2-ol is heated with concentrated sulphiric acid, is :

Phthalic acid reacts with resorcinol in the presence of concentrated H_(2)SO_(4) to give: