Question

conversion of methane to ethane

Answer 1

Answer:

METHANE ON CHLORINATION GIVES CHLOROMETHANE ON WURTZ SYNTHESIS GIVES ETHANE

Chlorination of methane

CH4 + Cl2 → CH3-Cl + HCl (in presence of sunlight)

Wurtz synthesis

2CH3-Cl +2Na → C2H6 (in presence of dry ether)

I think it is right