The correct order of reactivity of hydrogen halides with ethyl alcohol is

Assertion : In fused state,calcium chloride cannot be used to dry alcohol or $NH_3$.
Reason : $CaCl_2$ is not a good dessicant.

The decreasing order of reactivity of the following alcohols with halo acid is:
$(I)$ $CH_3OH$
$(II)$ $CH_3CH_2OH$
$(III)$ $(CH_3)_2CHOH$
$(IV)$ $(CH_3)_3COH$

Write about the production,physical properties,uses,and denaturation of ethanol.

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:

The vapours of an alcohol $(X)$ are passed over $Cu$ heated at $300^{\circ} C$,where an alkene is formed as the product. The alcohol $(X)$ is expected to be $:-$