What is acid hydrolysis of ether?

The major product of the following reaction is

$\underset{ \mathrm{ii}. {\mathrm{H}}_2\mathrm{O}}{\overset{ \mathrm{i}.\mathrm{LiAlH}{ }_4}{\to }}$

In the given reactions $\mathrm{M}$ is the number of major products obtained in ${\mathrm{I}}^{\mathrm{st}}$ reaction and $\mathrm{N}$ number of major products obtained in ${\mathrm{II}}^{\mathrm{nd}}$ reaction. Report your answer as $\mathrm{MN}$. .

(i) 

(ii) 

Which reagent is suitable for this conversion?

ldentify the alkene which will not provide the following alcohol upon oxymercuration demercuration.

The product of above reaction is:

Which of the following alkene will give ($\mathrm{P}$) on oxymercuration reduction reaction,