Methylated spirit is

What is the major product of the following reaction?
$CH_3-CH(OH)-CH_2-CH_2-OH \xrightarrow[Pyridine, \text{cold}]{CrO_3} \text{Product}$

In which of the following reactions will hydrogen gas not be evolved?

Ethanol,when reacted with $PCl_5$,gives $A$,$POCl_3$,and $HCl$. $A$ reacts with silver nitrite $(AgNO_2)$ to form $B$ (major product) and $AgCl$. $A$ and $B$ are respectively:

$CH_3MgBr + \text{Cyclopentanone}$ $\xrightarrow{H_3O^{+}} A$ $\xrightarrow{HBr} B$ $\xrightarrow{Mg/\text{ether}} C$ $\xrightarrow{HCHO}_{H_3O^{+}} D$ $\xrightarrow{HI} E$
$E$ is

Compare the water solubility (miscibility) of ethers and alcohols.