Constant proportion ans (1) gin a given compound, 90 component elementis in fred ratio of berentange. ( t ) doesnot depend on source or method of formation. So, Ans (1)
- The % of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This proves the law of: 1) Constant Proportion 2)Reciprocal Proportion 3) Multiple Proportion 4) Conservation of mass.