CET Karnataka Medical
CET - Karnataka Medical Solved Paper-2008
question_answer
How many optically active stereomers are possible for butan-2,3-diol?
A) \[1\]
B) \[2\]
C) \[3\]
D) \[4\]
Correct Answer:
B
Solution :
where \[{{C}^{*}}\] = asymmetric C atom It is a symmetrical molecule, so the number of optically active streamer\[={{2}^{n-1}}\] (n = number of asymmetric C atom) \[={{2}^{2-1}}\] \[={{2}^{1}}=2\]