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Match List I with List II. List I List II A. Nitrogen oxides in air I. Eutrophication B. Methane in air II. pH of rain water becomes 5.6 C. Carbon dioxide III. Global warming D. Phosphate fertilisers in water IV. Acid rain Choose the correct answer from the options given below :

1. A-II, B-III, C-I, D-IV
2. A-I, B-II, C-III, D-IV
3. A-IV, B-III, C-II, D-I
4. A-IV, B-II, C-III, D-I

Correct answer: A-IV, B-III, C-II, D-I

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