Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMCONFORMATIONAL ISOMERISMEasy2 minQB
ChemistryEasymultiple choice
In the Newman projection for 1,2-dibromopropane, X and Y can respectively be :
(A) and H (B) and
(C) and (D) H and
Options:(select one or more)
Answer:
B, D
Solution:
Ans : (B, D).
Put the values of X and Y in each structure and read off the carbon skeleton :
(A) :
The front carbon carries , H, H and the back carbon carries , H, H : the molecule is (1,2-dibromoethane) - only two carbons, so it is not 1,2-dibromopropane.
(B) :
The molecule is = 1,2-dibromopropane - correct.
(C) :
The molecule is (1,1-dibromoethane) - both bromines on the same carbon, so it is not 1,2-dibromopropane.
(D) :
The molecule is = 1,2-dibromopropane, viewed from the end - correct.
Hence X and Y can be and , or H and : (B) and (D).
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:CONFORMATIONAL ISOMERISM
⏱ 2mℹ️ Source: QB
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