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Physical and Ch...

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  • Question 1
    1 / -0

    A coating of _______ is deposited on iron bridges to prevent it from rusting.

  • Question 2
    1 / -0

    Stainless steel can protect iron from rusting as it contains:

  • Question 3
    1 / -0

    $$2Mg + O_2 \longrightarrow$$

  • Question 4
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    Dissolution of common salt or sugar in water is an example of:

  • Question 5
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    Ripening of fruits and growing of plant into a tree is an example of:

  • Question 6
    1 / -0

    When magnesium is burnt in presence of air, the weight of magnesium:

  • Question 7
    1 / -0

    During a chemical change :

  • Question 8
    1 / -0

    Match the columns:


    III
    (a)Physical change(i)Curdling of milk
    (b)Chemical change(ii)Demagnetisation of magnets
    (iii)Digestion of food
    (iv)Crystallisation of substance
    (v)Rusting of iron

  • Question 9
    1 / -0

    Chemical change are characterised by ___________.

  • Question 10
    1 / -0

    Sun tanning is a/an :

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