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Fill in the blanks: 1. ……… is called as vital life. 2. Nitrogen is ……… than air. 3. ………is used as a fertilizer. 4. Dry ice is used as a ……… 5. The process of conversion of iron into hydrated form of oxides is called ………… |
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Answer» 1. Oxygen 2. lighter 3. Nitrogen 4. refrigerant 5. rusting |
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