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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Mock Test - Some Basic Concepts of Chemistry

  • question_answer
    A sample of pure carbon dioxide, irrespective of its source contains 27.27% carbon and 72.73% oxygen. The data support

    A) Law of constant composition

    B) Law of conservation of mass

    C) Law of reciprocal proportions

    D) Law of multiple proportions

    Correct Answer: A

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