Law of Multiple Proportions — MCQ Practice

Two elements, X and Y, combine to form two compounds. In the first compound, 0.5 g of X combines with 0.8 g of Y. In the second compound, 0.25 g of X combines with 0.4 g of Y. Which law of chemical combination is illustrated by this data?

Nitrogen and oxygen combine to form three different compounds: $N_2O$, $NO$, and $NO_2$. If we fix the mass of nitrogen, the masses of oxygen combining with it in these compounds will be in the ratio:

Which of the following pairs of compounds correctly illustrates the Law of Multiple Proportions?

Copper forms two oxides. In the first oxide, 1.25 g of copper is combined with 0.31 g of oxygen. In the second oxide, 1.25 g of copper is combined with 0.155 g of oxygen. Show that this data illustrates the Law of Multiple Proportions.

Iron forms two oxides. In oxide A, 1.0 g of iron combines with 0.286 g of oxygen. In oxide B, 1.0 g of iron combines with 0.429 g of oxygen. The ratio of oxygen masses that combine with a fixed mass of iron is approximately:

Which of the following statements is INCORRECT regarding the Law of Multiple Proportions?

In two oxides of sulfur, the percentage of sulfur is 50% and 40% respectively. Show that these data are in accordance with the Law of Multiple Proportions.