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  3. 7th Class
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  5. Physical and Chemical Changes

7th Class Science Physical and Chemical Changes Question Bank Physical and Chemical Changes

  • question_answer
    Magnesium ribbon bums in candle flame with

    A) brilliant green light      

    B) brilliant white light

    C) brilliant red light          

    D) brilliant yellow light

    Correct Answer: B

    Solution :

    brilliant white light


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