MCQ
The positive charge of an atom is
- ASpread all over the atom
- BDistributed around the nucleus
- ✓Concentrated at the nucleus
- DAll of these
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$CH_3 - CH = CH - CH_3 \xrightarrow{{{O_3}}} A $$\xrightarrow[{Zn}]{{{H_2}O}} B.$
The compound $B$ is

$B$ and $C$ both gives $+ve$ iodoform test: $R$ and $R'$ can be :