Electrolysis of an aqueous solution of .......... gives ethylene.

For the preparation of alkenes,an aqueous concentrated solution of sodium or potassium salts of carboxylic acids is subjected to ........

What is the product of the reaction $CH_3CH_2CH=CH_2$ $\xrightarrow{1. Hg(OAc)_2, H_2O}$ $\xrightarrow{2. NaBD_4}$?

For the given reaction sequence,identify $C$ and $D$:
$3\text{-methylbut-1-ene}$ $\xrightarrow[(ii) NaBH_4]{(i) Hg(OAc)_2/H_2O} A$ $\xrightarrow{H^\oplus/\Delta} B$ $\xrightarrow{O_3/Zn/H_2O} C + D$

The reaction conditions used for converting $1, 2$-dibromoethane to ethylene are:

Provide information about the structure and isomerism of alkenes.