8th Class Science Chemical Effects of Electric Current Question Bank Chemical Effects of Electric Current

  • question_answer The bumpers and door handles of motor cars, taps etc. are coated with silvery layer of chromium because
    (i)  It does not easily get corroded.
    (ii) It forms a hard layer which does not easily get scratched.
    (iii) It tarnishes quickly.
    (iv) It is cheap.
    Which of the following options is correctly identifies true (T) or false (F)?

    A)

    (i) (ii) (iii) (iv)
    F F T T
     

    B)

    (i) (ii) (iii) (iv)
    T T F F
     

    C)

    (i) (ii) (iii) (iv)
    F T F T
     

    D)

    (i) (ii) (iii) (iv)
    T T F T
     

    Correct Answer: D


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