Question

The oxides of nitrogen contain 63.65%, 46.69% and 30.46% of nitrogen by weight, respectively. This data illustrates the law of:

• A. constant proportions
• B. multiple proportions
• C. reciprocal proportions
• D. conservation of mass

Answer 1

Answer: (B)

multiple proportions

The law of multiple proportions say that If two elements form more than one compound between them, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers.
Here, the ratios of oxygen which react with a constant mass of N are $2:3,2:1$ and $4:3$ respectively.