Which from following is called as Lucas reagent?

Step-by-step solution

Lucas reagent is a mixture of concentrated hydrochloric acid ( HCl ) and zinc chloride ( ZnCl ₂ ) . It is used for the differentiation of alcohols based on their reactivity. The test is particularly used to distinguish between primary, secondary, and tertiary alcohols. - Tertiary alcohols react almost immediately with Lucas reagent to form alkyl chlorides (substitution of the hydroxyl group with a chlorine atom). - Secondary alcohols react after some time, typically within 5-10 minutes. - Primary alcohols react ver