Iodoform can be prepared from all except:

The order of ease of dehydration of the following alcohols is:
$I$: $CH_3-CH_2-CH_2-OH$
$II$: $(CH_3)_2CH-OH$
$III$: $(CH_3)_3C-OH$
$IV$: $CH_3-CH_2-OH$

$3$ moles of ethanol react with $1$ mole of phosphorus tribromide to form $3$ moles of bromoethane and $1$ mole of $X$. Which of the following is $X$?

$0.44 \ g$ of a monohydric alcohol when added to methylmagnesium iodide in ether liberates $112 \ cm^{3}$ of methane at $S.T.P.$ With $PCC$,the same alcohol forms a carbonyl compound that answers the silver mirror test. The monohydric alcohol is:

Which of the following is not true in case of reaction with heated copper at $300 \ ^oC$?

Which of the following alcohols undergoes dehydration most easily with concentrated $H_2SO_4$?