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  1. The light rays used for eliminating bacteria is

    2. A.

     X-rays
    B.

     Infrared rays
    C.

     Microwave radiation
    D.

     Ultra-violet radiation

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    Answer : Option D

    Explanation :

    Ultraviolet radiation is used to kill microorganisms, molds and fungus in various environmental applications. UV sterilization is used for air-purification systems, water purification, aquarium and pond maintenance, laboratory hygiene and food and beverage protection.

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