UPSC General Studies Sample Paper General Studies Sample Paper-6

  • question_answer
    Consider the following statements in the aspect of microwave oven.
    1. Microwaves are generated in the oven by means of a magnetron.
    2. Heating occurs inside the food, with warming the surrounding air.
    3. Most type of glasses, papers etc absorb the microwaves and hence heated up.
    4. A microwave oven cooks food using microwaves of megahertz frequency.
    Which of the statements) given above is/are not correct?

    A)  1 and 4           

    B)  2 and 3

    C)  Only 3             

    D)  None of these

    Correct Answer: B

    Solution :

    [b] Statement 1 is correct microwaves are generated in the oven by means of a magnetron. Statement 2 is incorrect heating occurs inside the food without warming the surrounding air. Statement 3 is also incorrect, as most type of glasses, papers etc do not absorb the microwaves and hence, do not heat up. Statement 4 is correct, microwaves oven generate microwave of megahertz frequency range.

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