MCQ
Sugars are
- AOptically active polyhydroxy aldehydes
- BOptically active polyhydroxy ketones
- COptically active polyhydroxy aldehydes or ketones
- ✓Polyhydroxy aldehydes or ketones which may or may not be optically active
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Reason : Conc. $HNO_3$ reacts with metal and first produces a metal nitrate and nascent hydrogen. The nascent hydrogen then further reduces $HNO_3$ to $NO_2$.
