MDCAT Chemistry MCQ #46

A sample of 2-methyl-2-propanol is tested with a mixture of anhydrous ZnCl2 and concentrated HCl. When will the oily layer of alkyl halide appear?

MDCAT Chemistry MCQ #46

  1. Question 1

    Q1. A sample of 2-methyl-2-propanol is tested with a mixture of anhydrous ZnCl2 and concentrated HCl. When will the oily layer of alkyl halide appear?

    • A) After 10 minutes of heating
    • B) Immediately upon addition
    • C) Within 5 to 10 minutes
    • D) Only after 30 minutes

    Answer: Immediately upon addition

    Explanation: Tertiary alcohols like 2-methyl-2-propanol react immediately with Lucas reagent. 5-10 minutes is characteristic of secondary alcohols like 2-propanol.