Back to Practice
AIPMT PRELIMS2007Chemistry-Organic Chemistry

AIPMT PRELIMS 2007 Chemistry Stereochemistry MCQ Question

Type: MCQ-conceptual-Medium-Class 11

CH₃—CHCl—CH₂—CH₃ has a chiral centre. which one of the following represents its R⁻configuration?

A

C2H5∣H−C−CH3∣Cl\begin{array}{c} \text{C}_2\text{H}_5 \\ | \\ \text{H} - \text{C} - \text{CH}_3 \\ | \\ \text{Cl} \end{array}

B

C2H5∣Cl−C−CH3∣H\begin{array}{c} \text{C}_2\text{H}_5 \\ | \\ \text{Cl} - \text{C} - \text{CH}_3 \\ | \\ \text{H} \end{array}

C

CH3∣H−C−Cl∣C2H5\begin{array}{c} \text{CH}_3 \\ | \\ \text{H} - \text{C} - \text{Cl} \\ | \\ \text{C}_2\text{H}_5 \end{array}

D

C2H5∣H3C−C−Cl∣H\begin{array}{c} \text{C}_2\text{H}_5 \\ | \\ \text{H}_3\text{C} - \text{C} - \text{Cl} \\ | \\ \text{H} \end{array}

Correct Answer

Option a

Detailed Explanation

The R/S configuration is determined by the Cahn-Ingold-Prelog priority rules. The configuration is R if the sequence is clockwise.

Found an issue with this question?

Related Questions

Explore More Questions

All Chemistry QuestionsOrganic Chemistry – Some Basic Principles & Techniques QuestionsAIPMT PRELIMS 2007 PYQ