Identify the compounds $A$ and $B$ involved in the formation of the given aldol product: $A + B \xrightarrow{OH^-} CH_3-CH_2-CH(OH)-CH(CH_3)-CHO$

  • A
    $CH_3 CH_2 CH_2 OH, CH_3 CH_2 CHO$
  • B
    $CH_3 COCH_3, CH_3 CH_2 CHO$
  • C
    $CH_3 CH_2 CHO, CH_3 CH_2 CHO$
  • D
    $CH_3-CH(CH_3)-CHO, CH_3CHO$

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$A$ and $B$ are isomers. Identify $B$.

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The starting material is $CH_3COCH_2CHO$. The reaction sequence is:
$CH_3COCH_2CHO$ $\xrightarrow[{(ii)LiAlH_4}]{{(i)ethylene\,glycol/dry\,HCl}} A$ $\xrightarrow[\Delta ]{H_3O^{+}} B$
What will be $B$?

Match List-$I$ with List-$II$.
List-$I$ Reaction List-$II$ Reagents
$A$. Hoffmann Degradation $I$. Conc. $KOH, \Delta$
$B$. Clemmensen reduction $II$. $CHCl_3, NaOH / H_3O^{+}$
$C$. Cannizzaro reaction $III$. $Br_2, NaOH$
$D$. Reimer-Tiemann reaction $IV$. $Zn-Hg / HCl$

In which of the following reactions is the product $NOT$ correct?

In the above sequence,$P$ and $Q$ products can be distinguished by?

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