Question

When the following aldohexose exists in its d-configuration, then the total number of stereoisomers in its pyranose form is:

• A. $8$
• B. $16$
• C. $24$
• D. $32$

Answer 1

The correct option is A

$8$

The explanation of the correct option:

(A) $\mathbf{8}$

Step 1: Find the number of chiral carbons.

The total number of chiral carbons present in the D-aldohexose to pyranose is $3$

Step 2: Formula

• The total number of stereoisomers is given by: $2^{n}wheren$is the number of chiral carbon or chiral centers present in a compound.

Step 3: calculate

• The total number of chiral centers: $3$
• Therefore. $2^n=2^3=8$ stereoisomers are present in pyranose.

Hence, the correct option is (A) $\mathbf{8}$

The explanation of the incorrect options:

Since, the correct number of stereoisomers are 8. Therefore, options (B), (C) and (D) are incorrect.

Hence, the correct answer is option (A), 8.