Q. What is the number of Green House Gases, as recognized by the Kyoto Protocol?
Answer: 6
Notes: The Kyoto Protocol is an international treaty which was adopted in 1997. The objective of the treaty was to reduce CO2 emissions and the greenhouse gases in the atmosphere. Kyoto Protocol recognized six green house gases i.e. Carbon dioxide, Methane, Nitrous oxide, Hydrofluorocarbons, Perfluorocarbons, and Sulphur hexafluoride.

3