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Question
Match the terms given in Column I with the compounds given in Column II.
| Column I | Column II |
| (i) Acid rain | (a) CHCl2 – CHF2 |
| (ii) Photochemical smog | (b) CO |
| (iii) Combination with haemoglobin | (c) CO2 |
| (iv) Depletion of ozone layer | (d) SO2 |
| (e) Unsaturated hydrocarbons |
Solution
| Column I | Column II |
| (i) Acid rain | (c) CO2, (d) SO2 |
| (ii) Photochemical smog | (d) SO2, (e) Unsaturated hydrocarbons |
| (iii) Combination with haemoglobin | (b) CO |
| (iv) Depletion of ozone layer | (a) CHCl2 – CHF2 |
Explanation:
(i) Acid rain is caused due to oxides of carbon, sulphur and nitrogen.
(ii) Photochemical smog is formed by unburnt fuel (unsaturated hydrocarbons).
(iii) Carbon monoxide with haemoglobin is poisonous.
(iv) Chlorofluorocarbons (CHCl2 – CHF2) cause ozone depletion.
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