9th Class General Knowledge Sample Paper General Knowledge Olympiad Model Test Paper-1

  • question_answer
    Wind is often found to blow during the hot summer days due to:

    A)  Convection current of air

    B)  Radiation from the soil

    C)  Conduction of heat between air and soil on the earth

    D)  All of these

    E)  None of these

    Correct Answer: C


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