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प्रश्न
Match the following:
| Column I | Column II | ||
| 1. | Burning of coal | a. | Rusting |
| 2. | Painting of a surface | b. | Evaporation |
| 3. | Dipping iron in the water | c. | Chemical change |
| 4. | Salt from seawater | d. | Prevention of rusting |
जोड़ियाँ मिलाइएँ
उत्तर
| Column I | Ans | ||
| 1. | Burning of coal | c. | Chemical change |
| 2. | Painting of a surface | d. | Chemical change |
| 3. | Dipping iron in the water | a. | Rusting |
| 4. | Salt from seawater | b. | Evaporation |
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