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8th Standard English Medium Science Subject T1 - Changes Around Us Book Back 2 Mark Questions with Solution Part - I Question Bank Software Jun-16 , 2021

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8th Standard English Medium Science Subject T1 - Changes Around Us Book Back 2 Mark Questions with Solution Part - I

8th Standard English Medium Science Subject T1 - Changes Around Us Book Back 2 Mark Questions with Solution Part - I

8th Standard

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Science

Time : 00:30:00 Hrs
Total Marks : 10
    5 x 2 = 10

  1. Mention the various conditions required for a chemical reaction to occur

  2. What happens when an iron nail is placed in copper sulphate solution?

  3. What is Tarnishing? Give an example.

  4. On heating, calcium carbonate gives calcium oxide and oxygen. Is it exothermic reaction or endothermic reaction?

  5. Why photosynthesis is a chemical reaction?

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