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

  • question_answer There are two different solutions in set up P and Q as shown in figure. The bulb in the set up P glows more brightly as compared to that of the set up Q. What are the possible causes for this?
    (i) The connections of the circuit Q may be loose.
    (ii) The liquid in Q may have small conductivity.
    (iii) Liquid in P is equivalent to a battery while liquid in Q is equivalent to a cell of the battery of liquid P.

    A)  Only (i) and (ii)          

    B)  Only (ii) and (iii)

    C)         Only (i)                      

    D)  Only (ii)

    Correct Answer: B

    Solution :

    Both liquids conduct electricity. In figure both the circuits are tightly connected as bulbs glow. Reasons are given in (ii) and (iii).


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