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Chemical Reacti...

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  • Question 1
    1 / -0

    Which of the following is a not a chemical change?

  • Question 2
    1 / -0

    Which of the following is not an example of physical change?

  • Question 3
    1 / -0

    What is the process of conversion of sugar to alcohol and carbon dioxide by yeast called?

  • Question 4
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    Which of the following statements justifies that photosynthesis is a chemical change?

  • Question 5
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    Which of the following statements justifies the law of conservation of mass?

  • Question 6
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    What is law of conservation of mass?

  • Question 7
    1 / -0

    Which of the following is a balanced chemical equation?

  • Question 8
    1 / -0

    How many atoms of chlorine react with hydrogen gas in the given equation?
    2H2 + 2Cl2 2HCl

  • Question 9
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    Which of the following is a combination reaction?

  • Question 10
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    Which of the following types of reaction involves both chemical and physical changes?

  • Question 11
    1 / -0

    What is the other name of baking soda?

  • Question 12
    1 / -0

    Which type of change takes place during the formation of curd from milk?

  • Question 13
    1 / -0

    Which of the following is a decomposition reaction?

  • Question 14
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    How many atoms of copper should be added in the products to balance the given chemical equation?
    2Fe + 2CuSO4 2FeSO4 + Cu

  • Question 15
    1 / -0

    In which form is copper element obtained in the given reaction?
    Pb(s) + CuCl2(aq) PbCl2 (aq) + Cu(s)

  • Question 16
    1 / -0

    Which law justifies a balanced chemical equation?

  • Question 17
    1 / -0

    Why does an iron container turn reddish brown when exposed to moisture for long period of time?

  • Question 18
    1 / -0

    Which of the following gases is used to fill in the bags of potato chips to prevent oxidation?

  • Question 19
    1 / -0

    Which of the following food materials does not become rancid?

  • Question 20
    1 / -0

    Which of the following metals does not undergo corrosion?

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