1.

The \[C-H\]bond distance is the longest in           [MNR 1990]

A.                 \[{{C}_{2}}{{H}_{2}}\]    
B.                 \[{{C}_{2}}{{H}_{4}}\]
C.                 \[{{C}_{2}}{{H}_{4}}B{{r}_{2}}\] 
D.                 \[{{C}_{6}}{{H}_{6}}\]
Answer» D.                 \[{{C}_{6}}{{H}_{6}}\]


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