Case: Read the passage and answer the following questions

Alcohol can be prepared in many ways. Alcohols are prepared from alkenes by acid catalysed hydration and by hydroboration–oxidation. Alcohols are even prepared from ketones and aldehydes by reduction. The reduction of carboxylic acid and ester leads to the formation of alcohol. Alcohols are produced by the reaction of Grignard reagents with aldehydes and ketones. Phenol, also known as carbolic acid, was first isolated in the early nineteenth century from coal tar. Nowadays, phenol is commercially produced synthetically. In the laboratory, phenols are prepared from benzene derivatives in many ways.

Acid catalyzed hydration of alkenes except ethene leads to the formation of;

Secondary or tertiary alcohol

Acid catalysed hydration of alkenes except ethene leads to the formation of secondary or tertiary alcohol. Acid catalysed hydration of ethene leads to the formation of primary alcohol.