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WAEC Agricultural Science 2002 Question 12

Question 12

Soil Fertility and Plant Nutrition

Which reaction takes place in nitrogen fixation during lightening?

  1. A.2NO2 + HNO2 → HNO3
  2. B.N2 + O2 → 2NO
  3. C.2HNO2 + O2 → 2HNO3
  4. D.NO2 → 2NO + O2
Show the answer and explanation

Answer: B (N2 + O2 → 2NO)

Explanation

The heat of lightning makes nitrogen and oxygen in the air combine to form nitrogen oxide.