Question
What are non-metals? Name five non-metals.
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| Column A | Column B | ||
| (a) | Sulphur dioxide | (i) | Damage ozone layer. |
| (b) | Carbon dioxide | (ii) | Reduces oxygencarrying capacity of blood. |
| (c) | Carbon monoxide | (iii) | Acid rain. |
| (d) | Chlorofluorocarbons | (iv) | Green house gas. |

| A | B | ||
| $(i)$ | Kharif crops | $(a)$ | Food for cattle |
| $(ii)$ | Rabi crops | $(b)$ | Urea and super phosphate |
| $(iii)$ | Chemical fertilisers | $(c)$ | Animal excreta, cow dung urine and plant waste |
| $(iv)$ | Organic manure | $(d)$ | Wheat, gram, pea |
| $(e)$ | Paddy and maize |
