MCQ
Which of these was the largest selling antacid?
- ✓Cimetidine
- BZantac
- CSulpha
- DNone of these
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$(I)$ Only compounds with chiral centers can be optically active
$(II)$ Absence of elements of symmetry is the reason for a molecule's optical activity
$(II)$ All organic compounds contain carbon & hydrogen
$(IV)$ Different cannonical forms of a molecule represent the actual structures of a molecule which has resonace in it