Methanol and ethanol are miscible in water due to

The main product of the following reaction is:
$C_6H_5-CH_2-CH(OH)-CH(CH_3)_2 \xrightarrow{conc. H_2SO_4} ?$

Which of these dehydrates most easily?

Consider the following reaction sequence:
$C_6H_5-CH=CH-CHO$ $\xrightarrow[35^{\circ}C]{LiAlH_4} A$ $\xrightarrow[Excess]{CH_3MgBr} B$
Identify $B$ in the reaction.

Consider the following reactions:
$X + HCl \xrightarrow{\text{Anhydrous } AlCl_3} C_2H_5Cl$
$Y \xrightarrow{\text{Anhydrous } ZnCl_2 / HCl} C_2H_5Cl$
$Y$ can be converted to $X$ on heating with which of the following reagents?

Which of the following sequence of reagents converts propene to $1$-chloropropane?