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)

2-methyl-2-propanol

Answer 2

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.