JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2011

  • question_answer
        An ice cream has a marked value of 700 kcal. How many kilowatt-hour of energy will it deliver to the body as it if digested?

    A)  0.81 kWh           

    B)  0.90 kWh

    C)  1.11 kWh           

    D)  0.71 kWh

    Correct Answer: A

    Solution :

                    \[1\text{ }kcal={{10}^{3}}cal\] \[4200\text{ }J=\frac{4200}{3.6\times {{10}^{8}}}kWh\] \[700\,kcal=\frac{700\times 4200}{3.6\times {{10}^{6}}}kWh\] \[=0.81\text{ }kWh\]


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