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Physical and Ch...

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  • Question 1
    1 / -0

    A chemical change may involve-

  • Question 2
    1 / -0

    Which of the following are chemical changes?
    (i) Decaying of wood
    (ii) Burning of wood
    (iii) Sawing of wood
    (iv) Hammering of a nail into a piece of wood

  • Question 3
    1 / -0

    Choose the most appropriate answer:
         
    Physical changes are:

  • Question 4
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    Choose the most appropriate answer:  
      
    Chemical changes involve;

  • Question 5
    1 / -0

    Chemical change involve 

  • Question 6
    1 / -0

    Physical changes are:

  • Question 7
    1 / -0

    The chemical formula of rust is?

  • Question 8
    1 / -0

    Crystallisation is a:

  • Question 9
    1 / -0

    Which of the following is not a chemical change?

  • Question 10
    1 / -0

    Identify the chemical change in the following :

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