A sample of pure carbon dioxide, irrespective of its source contains 27.27% carbon and 72.73% oxygen. The data support [AIIMS 1992] (a) Law of constant composition (b) Law of conservation of mass (c) Law of reciprocal proportions (d) Law of multiple proportions
Answer. A sample of pure carbon dioxide, irrespective of its source contains 27.27% carbon and 72.73% oxygen. The data supports Law of constant composition