Alcohols of low molecular weight are

The starting material is $butan-2-ol$. The reaction with $H^+/\Delta$ yields $(x)$ possible products,and the subsequent reaction of these products with $Br_2/CCl_4$ yields $(y)$ possible products. Determine the values of $x$ and $y$.

Which of the following forms $2-$Methylbut$-2-$ene on heating with concentrated sulphuric acid?

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

Assertion : The ease of dehydration of the following alcohols is as shown in the image.
Reason : Alcohols leading to conjugated alkenes are dehydrated to a greater extent.

Primary,secondary and tertiary alcohols can be distinguished by$-$