Question

Which of the following statement is incorrect?

• A. \( (-) \)-2-bromooctane reacts with NaOH gives (+)-octan-2-ol by \( {S}_{N}2 \) reaction.
• B. 2-Bromobutane reacts with NaOH gives racemic mixture by \( {S}_{N}1 \) reaction.
• C. \( \beta \)-elimination of 2-bromopentane gives pent-1-ene as major product.
• D. The hybridization of the carbon in the intermediate formed in \( {S}_{N}1 \) reaction is sp\(^2\).
• E. Primary alkyl halide undergoes \( {S}_{N}2 \) faster than secondary alkyl halide.

Hint:

In \( \beta \)-elimination reactions (E2), the most stable alkene is generally the major product.

Answer 1

The Correct Option is C

The \( \beta \)-elimination of 2-bromopentane results in the formation of pent-2-ene as the major product, not pent-1-ene. This is because the most favorable elimination (E2) reaction occurs at the beta position with the most accessible hydrogen. 
Thus, the correct answer is (C).