How can you convert the following:

(i) Ethene into ethane:

Ethene + H₂ → Ethane (Hydrogenation)

(ii) Methane into carbon tetrachloride:

CH₄ + 4Cl₂ → CCl₄ + 4HCl (Chlorination)

(iii) Ethene into glycol:

Ethene + H₂O₂ → Ethylene glycol (In the presence of a catalyst)

(iv) Ethyl chloride into ethane:

C₂H₅Cl + H₂ → C₂H₆ + HCl (Reduction with hydrogen)

(v) Ethyl bromide into ethene:

C₂H₅Br → C₂H₄ + HBr (Dehydrohalogenation in the presence of a base)