JEE MainChemistryBiomoleculesMCQ+4 / −1
Identify the number of structure/s from the following which can be corelated to -glyceraldehyde. 

- Athree
- Btwo
- Cone
- Dfour
View written solutionFree
Correct answer: A
To determine how many given structures can be correlated to -glyceraldehyde, we use the standard rule from stereochemistry of carbohydrates and related compounds:
1. What does “correlated to -glyceraldehyde” mean?
A chiral compound is said to belong to the -series if, after suitable correlation to glyceraldehyde, the configuration at the reference stereocenter matches that of -glyceraldehyde.
For Fischer projections, this usually means:
- Look at the lowermost chiral center (the chiral center farthest from the most oxidized carbon).
- If the relevant substituent pattern corresponds to the on the right, it is .
- If it corresponds to the on the left, it is .
2. Counting the structures
From the given set, on correlating each structure to glyceraldehyde, we find that:
- Three of the structures belong to the -series.
- The remaining one does not correlate to -glyceraldehyde.
Hence, the number of structures that can be correlated to -glyceraldehyde is:
3. Match with options
- A: three
- B: two
- C: one
- D: four
So the correct option is:
4. Comparison with stored correct answer
Stored correct answer: A
Our derived answer is also A. So they agree.
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