MDCAT Chemistry MCQ #587

When Lucas reagent is added to an unknown alcohol at room temperature, an immediate oily layer forms. Identify the alcohol type.

MDCAT Chemistry MCQ #587

  1. Question 1

    Q1. When Lucas reagent is added to an unknown alcohol at room temperature, an immediate oily layer forms. Identify the alcohol type.

    • A) Tertiary butyl alcohol
    • B) Secondary butyl alcohol
    • C) n-Butyl alcohol
    • D) Isobutyl alcohol

    Answer: Tertiary butyl alcohol

    Explanation: Tertiary alcohols react immediately with Lucas reagent (ZnCl2/HCl) forming an oily layer, while primary alcohols require heating.