7th Class Science Related to Competitive Exam Question Bank Work and energy

  • question_answer
    DIRECTIONS: The questions in this segment consist of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below Assertion (A): Wire through which current flows gets heated. Reason (R): When current is drawn from a cell, chemical energy is converted into heat energy.

    A) Both A and R are true and R is the correct explanation of A.

    B) Both A and R are true but R is not the correct explanation of A.

    C) A is true but R is false.

    D) A is false but R is true.

    Correct Answer: C

    Solution :

        When we supply current through the cell, chemical reactions takes place, so chemical energy of cell is converted into electrical energy.


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