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  3. 7th Class
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7th Class Science Sample Paper Science Olympiad Model Test Paper-11

  • question_answer
    If A is more reactive than B, which one of the following is true?

    A) A will replace B from a salt of B.

    B) B will replace A from a salt of A.

    C) Both can displace each other from their salts.

    D) All of these

    E) None of these

    Correct Answer: A

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