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Physical and Ch...

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  • Question 1
    1 / -0

    Beating silver to make silver foil is _______change.

  • Question 2
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    Which one of the following substances increase in weight by burning in air?

  • Question 3
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    Melting of wax is a _________ change.

  • Question 4
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    Which of the following is not a physical change?

  • Question 5
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    Dissolution of carbon dioxide gas in water is  ________ change.

  • Question 6
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    Which of the following is an oxide of iron?

  • Question 7
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    Which of the following is a chemical change?

  • Question 8
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    Which of the following is not a chemical change?

  • Question 9
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    Animal dung is digested to produce biogas (process $$A$$). The biogas is used in the stove as a fuel (process $$B$$). Which of the following is correct?

  • Question 10
    1 / -0

    Photosynthesis in plants is a ________ change.

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