Chlorine cannot be prepared by the action of `HCl` on

Tert-butylamine cannot be prepared by the action of NH_(3) on tert-butylbromide. Give reason.

Hydrogen iodide cannot be prepared by the action of conc. H_(2)SO_(4) on KI because :

Chlorine cannot be used :

Unlike HCl, why HBr cannot be prepared by the action of concentrated sulphuric acid on sodium bromide? Explain.

Which of the following alcohols cannot be prepared by the action of a suitable Grignard reagent on an aldehyde or a ketone followed by acid hydrolysis ?

Which of the following alcohols cannot be prepared by the action of a suitable Grignard reagent on an aldehyde or a ketone followed by hydrolysis ?