Role of alc. KOH and aq. KOH

For carbylamine reaction, we need hot alc. KOH and

The reaction of 50% aq KOH on an equimolar mixture of 4-methylbenzaldehyde and formaldehyde followed by acidification gives.

x = moles of KOH consumed is :

The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.

The correct order for E_(2) reaction with alc. KOH will be :-

In dénydrohalogenation of tert-pentyl bromide using alc. KOH, major product obtained is

Ethylidene chloride on treatement with aq. KOH gives

Ethylidene chloride on treatement with aq. KOH gives