A) \[{{(C{{H}_{3}})}_{2}}CHCHO\]
B) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHO\]
C) \[C{{H}_{3}}C{{H}_{2}}CHBr\,\,CHO\]
D) \[C{{H}_{3}}C{{H}_{2}}CBrCHO\]
Correct Answer: C
Solution :
Compounds having asymmetric C-atom is optically active e.g., \[C{{H}_{3}}-C{{H}_{2}}-{{\,}^{*}}\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ Br \end{smallmatrix}}{\mathop{C}}\,}}\,-CHO\] The C-atom whose four valencies are satisfied by four different groups is asymmetric C-atom.
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