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10th Class Science Sample Paper Science Olympiad Model Test Paper-18

  • question_answer
    An electrical appliance of 0.5 kilowatt runs for 10 hours a day, the cost of electrical energy to operate for 30 days is _______ if the rate of electrical energy is Rs. 2 per kwh.

    A) Rs. 250

    B) Rs. 300

    C) Rs. 500

    D)  Rs. 400

    E)  None of these

    Correct Answer: B

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