Question

The letter ?$D$? in $D$-carbohydrates represents

• A. Dextrorotation
• B. Direct synthesis
• C. Configuration
• D. Mutarotation

Answer 1

Answer: (C)

Configuration

Answer 2

$'D'$ and $'L'$ indicates relative configuration of a particular carbohydrate.

$'D'$ represent the position of $2\, nd$ last $- OH$ group in any carbohydrate.

If the $2\,nd$ last $- OH$ is present on the right side it is called $'D'$ type configuration and if present to the left-side, it is called $'L'$ type configuration.