9th Class Science Sample Paper Science Olympiad Model Test Paper-20

  • question_answer
    Match the following.
    A. Percentage of calcium in \[CaC{{O}_{3}}\] (I) 35.37%
    B. Percentage of sulphur in \[{{H}_{2}}S{{O}_{4}}\] (II) 40%
    C. Percentage of oxygen in \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\] (III) 56.14%
    D. Percentage of chromium in \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] (IV) 32.65%

    A) A\[\to \]II, B\[\to \]IV, C\[\to \]III, D\[\to \]I

    B) A\[\to \]II, B\[\to \]I, C\[\to \]III, D\[\to \]IV

    C) A\[\to \]III, B\[\to \]IV, C\[\to \]II, D\[\to \]I

    D) A\[\to \]II, B\[\to \]III, C\[\to \]IV, D\[\to \]I

    E) None of these

    Correct Answer: A


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