Question

Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Di-tert-butyl ether cannot be prepared by Williamson's synthesis.

Reason (R): tert-butylbromide on treatment with sodium tert-butoxide preferentially undergoes elimination to from iso-butylene and tert-butyl alcohol.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is A Both A and R are true and R is the correct explanation of A

tert-Butylbromide is $3^o$ alkyl halide. Due to steric crowding, it prefer to undergo elimination instead of substituion. Hence both Assertion and Reason are correct statements and Reason is the correct explaination of the Assertion.