Compound $(x)$ with molecular formula $C_4H_8O$ gives a positive haloform test but does not give a $2,4-DNP$ test. The compound is:

When $Butan-2-ol$ is dehydrated using sulphuric acid,the concentration of acid and temperature needed respectively are:

How many primary alcohols (including stereoisomers) are possible with formula $C_5H_{12}O$?

Why is sulphuric acid not used during the reaction of alcohols with $KI$?

Point out the incorrect synthesis.

When a Grignard reagent reacts with $(B)$,product $(D)$ is obtained. Reactant $(A)$ of the above reaction is:
$(A)$ $\xrightarrow{PBr_3} (C)$ $\xrightarrow{Mg, \text{ether}} \text{Grignard reagent}$
$(A) \xrightarrow{Na_2Cr_2O_7, H_2SO_4} (B)$
$\text{Grignard reagent} + (B) \to (D) \xrightarrow{H_3O^\oplus} (3,4-\text{dimethylhexan-3-ol})$