Question

Lucas test is given fastly by

• A. butanol-2
• B. butanol-1
• C. 150-butanol
• D. 2-methyl-2-propanol

Answer 1

Answer: (D)

Among the $1^{\circ },2^{\circ }$ and $3^{\circ }$ alcohols, $3^{\circ }$ alcohols react with Lucas reagent readily and give turbidity while $2^{\circ }$ give turbidity after 5 min and $1^{\circ }$ do not react at room temperature.

Hence, 2-methyl-2-propanol ( $3^{\circ }$ alcohol) reacts with Lucas reagent fastly.