Which of the following is a solid trimer of formaldehyde?

  • A
    Metaldehyde
  • B
    Paraformaldehyde
  • C
    Paraldehyde
  • D
    Trioxane

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The $Wolff-Kishner$ reduction is used for which of the following?

The product $B$ is formed by the reaction of cyclohexanone with hydroxylamine $(NH_2OH)$ to form an oxime $(A)$,followed by a Beckmann rearrangement using polyphosphoric acid $(PPA)$. Identify the product $B$.

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The reaction of cyclopentanone with $NaOBr$ gives which product?
$\text{Cyclopentanone} \xrightarrow{NaOBr} \text{Product}$

$CH_3CHO$ $\xrightarrow{HCN} A$ $\xrightarrow{H_3O^+} B$. The product $B$ is

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In the above chemical reaction sequence,"$A$" and "$B$" respectively are:

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