Propanone when react with phosphorus pentachloride it gives-

Acetone reacts with phosphorous pentachloride to give:

Phosphorus pentachloride is ionic in

Acetaldoxirne reacts with phosphorus pentoxide to give:

When phenol reacts with phosphorus pentachloride, the main product is

Phosphorus pentachloride in the solid exists as :

An organic compound A with molecular formula C_(4)H_(10)O on treatment with phosphorus pentachloride gives alkyl chloride. Alkyl chloride on treatment with Mg in presence of dry ether gives a highly reactive compound B . Compound B reacts with water to give hydrocarbon C . Alkyl chloride on treatment with Na in dry ether as a solvent gives alkane, 2,2,3,3- tetramethylbutane. Identify A , B , C .

Which of the following compounds give a nucleophilic substitution reaction with phosphorus pentachloride?