Absolute alcohol ($100\%$ alcohol) is prepared by distilling rectified spirit over:

  • A
    $Na$
  • B
    $CaCl_2$
  • C
    $Mg$
  • D
    $Mg(OC_2H_5)_2$

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Which of the following compounds does $NOT$ respond positively to the iodoform test?

The following reaction is known as:
$C_2H_5OH + SOCl_2 \xrightarrow{\text{Pyridine}} C_2H_5Cl + SO_2 + HCl$

What are $X$ and $Y$ in the following reaction sequence?
$C_2H_5OH$ $\xrightarrow{Cl_2} \underline{X}$ $\xrightarrow{Cl_2} \underline{Y}$

The fastest rate of reaction will be when $R$ is:

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