Question

Lucas test was conducted on three compounds A, B and C. Compounds A and B showed turbidity at room temperature, but compound C became turbid only after heating. Which of the compounds has a tertiary structure?

(a) A

(b) A and B

(c) C

(d) Cannot be determined

This question was addressed to me by my school teacher while I was bunking the class.

This interesting question is from Alcohols and Phenols in chapter Alcohols, Phenols and Ethers of Chemistry – Class 12

Answer 1

Right option is (d) Cannot be determined

For explanation: It is said that A and B show turbidity at room temperature, but it is not mentioned whether the appearance of turbidity is immediate or after some time. So compounds A and B may be tertiary or secondary depending on whether turbidity appears immediately or after 5 minutes respectively. Compound C is may be primary.