UPSC PYQPrelims 2022

Civil Services Examination · প্রশ্ন 21

Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?

  1. Cotton
  2. Rice
  3. Sugarcane
  4. Wheat
উত্তর দেখান ও ব্যাখ্যা

উত্তর: (B) Rice

ব্যাখ্যা

Flooded paddy fields emit methane (anaerobic decomposition), and fertiliser use/wet-dry cycles emit nitrous oxide.