Which of the following is obtained as major product when excess of methane is treated with limited chlorine in presence of UV light?

Step-by-step solution

The reaction between methane and chlorine under UV light proceeds through free radical substitution mechanisms. The primary reaction yields chloromethane: CH ₄ + Cl ₂ UV light CH ₃ Cl + HCl . While subsequent chlorination is possible: CH ₃ Cl + Cl ₂ CH ₂ Cl ₂ + HCl , CH ₂ Cl ₂ + Cl ₂ CHCl ₃ + HCl , CHCl ₃ + Cl ₂ CCl ₄ + HCl , an excess of methane with limited chlorine favors monochlorination. The high concentration of methane increases the probability of chlorine radicals reacting with CH ₄ rather than chlorinated