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  3. 7th Class
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7th Class Science Sample Paper Science Olympiad Model Test Paper-1

  • question_answer
    The chemical reaction in which a compound breaks up into two or more than two substances is known as:

    A) Combination reaction     

    B) Decomposition reaction   

    C) Displacement reaction

    D) Neutralization reaction

    E) None of these

    Correct Answer: B

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