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प्रश्न
Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
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उत्तर
| Column A | Column B |
| (a) Blue salt changes to white and then black | (iv) Copper sulphate |
| (b) Orange coloured compound changes to green. | (i) Ammonium dichromate |
| (c) Red compound changes to brown and then yellow. | (v) Red Lead |
| (d) White to yellow when hot and white when cold. | (iii) Zinc Nitrate |
| (e) Violet solid changes to violet vapours. | (ii) Iodine |
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