The best reagent to convert $pent-3-en-2-ol$ into $pent-3-yn-2-one$ is

  • A
    Acidic permanganate
  • B
    Acidic dichromate
  • C
    Chromic anhydride in glacial acetic acid
  • D
    Pyridinium chlorochromate

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Given the reactions:
$CaOCl_2 + H_2O \longrightarrow Ca(OH)_2 + X$
$X + CH_3CHO \longrightarrow Y$
$Y + Ca(OH)_2 \longrightarrow CHCl_3$
What is '$Y$'?

In which of the following reactions does an aromatic aldehyde react with an acid anhydride in the presence of the salt of the corresponding acid to form an unsaturated aromatic acid?

When $CH_3COCH_3$ reacts with $Cl_2$ and $NaOH$,which of the following is formed?

Identify $A$ in the following reaction: $A + CH_3MgBr$ $\xrightarrow{\text{ether}} \text{complex}$ $\xrightarrow{H_3O^{+}} (CH_3)_3C-OH$

Which of the following has the lowest enol content?

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