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9th Class Science Sample Paper Science Olympiad Model Test Paper-8

  • question_answer
    Arrange the following in the decreasing order of masses: one atom of gold, one gram atom of nitrogen, one mole of calcium, one gram of iron.

    A) Gold > nitrogen > iron > calcium.

    B) Calcium > iron > nitrogen > gold.

    C) Nitrogen > Calcium > iron > gold.

    D) Calcium > nitrogen > iron > gold.

    E) None of these

    Correct Answer: D

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