9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Match the following. 
    A. Hydrogen in \[{{H}_{2}}O\] (I) 38.1%
    B. Oxygen in \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] (II) 15.8%
    C. Potassium in \[KMn{{O}_{4}}\] (III) 11.11%
    D. Aluminum in \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\] (IV) 24.68%

    A) A - II, B - I, C - II, D - IV

    B) A - III, B - I, C - IV, D - II

    C) A - III, B - II, C - IV, D - I

    D) A - II, B - III, C - IV, D - I

    E) None of these

    Correct Answer: B

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