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Fill in the blanks: 1. _____ is the active component of air. 2. The gas given out during photosynthesis is _____ 3. _____ gas is given to the patients having breathing problems. 4. _____ can be seen moving in a beam of sunlight in a dark room. 5. _____ gas turns lime water milky. |
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Answer» 1. Oxygen 2. Oxygen 3. Oxygen 4. Dust particles 5. Carbon-di-oxide |
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