Science

8th

grade

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Chemical Effects of Current

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Which of the following metals is used in electroplating to make objects appear shining?

    Iron

    Copper

    Chromium

    Aluminium

  • 2. Multiple Choice
    30 seconds
    1 pt

    Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

    in the nearby river.

    in the nearby pond.

    in the nearby cornfield.

    according to the disposal guidelines of the local authority.

  • 3. Multiple Choice
    30 seconds
    1 pt
    Which of the following statements is incorrect about the conductivity of water?
    Rain water is a good conductor of electricity.
    On addition of table salt, water conducts electricity.
    On addition of lemon juice, water conducts electricity.
    Water becomes a good conductor of electricity when heated.
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