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Materials Metals And Non-Metals Test - 4

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Materials Metals And Non-Metals Test - 4
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  • Question 1
    1 / -0

    In which of the following processes electric current is used to coat iron or steel with a layer of tin or chromium?

    Solution

    Electroplating involves passing an electric current through a solution called an electrolyte. Therefor Electroplating processes electric current is used to coat iron or steel with a layer of tin or chromium.

     

  • Question 2
    1 / -0

    In which of the following processes iron object is protected from rusting by dipping it into molten zinc?

  • Question 3
    1 / -0

    Which of the following elements forms acidic oxides?

    Solution

    Sulphur forms acidic oxide because it is a non-metal and non-metals form acidic oxides.

     

  • Question 4
    1 / -0

    Which of the following elements forms coloured compounds?

  • Question 5
    1 / -0

    Which of the following statements is true about reaction of metals and non-metals with water?

  • Question 6
    1 / -0

    Which of the following statements is not true about the reaction of metals and non-metals with acids?

  • Question 7
    1 / -0

    Which of the following metals does not replace copper from copper sulphate solution?

  • Question 8
    1 / -0

    Aluminium is used in making of airplanes because

  • Question 9
    1 / -0

    The fertilizers used for the enhancement of growth of plants contain compounds of which of the following non-metals?

  • Question 10
    1 / -0

    Which of the following happens when metals are treated with hydrogen?

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