In the given reaction,find the value of $x$,where $x$ is the number of moles of acetic anhydride $(Ac_2O)$ consumed.

Which of the following responds to a positive $(+ve)$ iodoform test?

Statement-$1$ : Secondary $\&$ Tertiary alcohols can be distinguished by Lucas reagent.
Statement-$2$ : Secondary $\&$ Tertiary alcohols can be distinguished by dichromate test.

When glycerol is treated with excess of $HI$,it produces:

Compound $A$ of molecular formula $C_4H_{10}O$ on treatment with Lucas reagent at room temperature gives compound $B$. When compound $B$ is heated with alcoholic $KOH$,it gives isobutene. Compound $A$ and $B$ are respectively:

Lower molecular weight alcohols are: