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JEE Main · 2023 · 12 Apr 2023 · Shift 1 · Environmental Chemistry

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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:

Answer: A → IV, B → III, C → II, D → I

Solution

Oxides of nitrogen dissolve in atmospheric moisture to form nitric acid and so contribute to acid rain. Methane is a greenhouse gas and drives global warming. Carbon dioxide dissolves in rain to give carbonic acid, which brings the pH of natural rain water down to about . Phosphate fertilisers washed into water bodies enrich them with nutrients and cause eutrophication. Hence nitrogen oxides go with acid rain, methane with global warming, carbon dioxide with a rain-water pH of , and phosphate fertilisers with eutrophication.

JEE Main · 2023 · 12 Apr 2023 · Shift 1 · Match the columns

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