The correct order of ease of dehydration of the following compounds is:

The correct order of boiling point for primary $(1^{\circ})$,secondary $(2^{\circ})$ and tertiary $(3^{\circ})$ alcohols is

$A$ compound is soluble in concentrated ${H_2SO_4}$. It does not decolorize a solution of bromine in ${CCl_4}$. However,it is oxidized by chromic anhydride in aqueous sulfuric acid within two seconds,changing the color of the solution from orange to blue,green,and finally opaque. What does the original compound contain?

The reaction sequence is given as:
$1-methylcyclohexene$ $\xrightarrow[alkaline \ KMnO_4]{cold} A$ $\xrightarrow[AcOH]{CrO_3} B$
Identify $A$ and $B$.

Which combination of alkyl bromide and epoxide can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the epoxide?

Give the structures of the products you would expect when each of the following alcohols reacts with $(a)$ $HCl - ZnCl_{2}$,$(b)$ $HBr$,and $(c)$ $SOCl_{2}$: $(i)$ $Butan-1-ol$,$(ii)$ $2-Methylbutan-2-ol$.