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प्रश्न
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
विकल्प
i and iii
i and iv
ii and iii
ii and iv
MCQ
उत्तर
ii and iv
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