NEET levelSingle correct optionDifficulty 1 of 3st085
A Fischer projection is rotated by 180∘ in the plane of the paper. The new projection represents:
Aits diastereomer
Bits enantiomer
Ca conformer that cannot be related to the original
Dthe same compound
Answer: D
A 180∘ rotation in the plane keeps vertical groups going back and horizontal groups coming forward. It is the same as two interchanges of groups at each centre, so the configuration is unchanged. The compound is the same.