By distilling glycol with fuming sulphuric acid,which of the following is obtained?

Select the best method for the preparation of the following compounds:
(Image shows a mixture of trans$-2-$methylcyclohexanol enantiomers)
($MCPBA$ = meta-chloroperoxybenzoic acid)

Arrange the following alcohols in increasing order of reactivity towards elimination reaction:
$(I)$ $NO_2-CH_2-CH_2-CH_2-CH_2OH$
$(II)$ $CH_3-CH_2-CH(NO_2)-CH_2OH$
$(III)$ $CH_3-CH(NO_2)-CH_2-CH_2OH$
$(IV)$ $CH_3-CH_2-CH_2-CH_2OH$
Select the answer from the codes given below:

Which of the following is not the product of dehydration of $1-$cyclohexylpropan$-1-$ol?

Which of the following compounds is oxidised to prepare methyl ethyl ketone?

Arrange the following alcohols in decreasing order of the ease of ionization under acidic conditions.