Question: In compound A, 1.00 g nitrogen unites with 0.57 g oxygen. In compound B, 2.00 g nitrogen combines with 2.24 g oxygen. In compound C, 3.00 g nitrogen combines with 5.11 g oxygen. These results obey the following law [CPMT 1971]
(a) Law of constant proportion
(b) Law of multiple proportion
(c) Law of reciprocal proportion
(d) Dalton's law of partial pressure
Correct Answer: (b) Law of multiple proportion
![Question: In compound A, 1.00 g nitrogen unites with 0.57 g oxygen. In compound B, 2.00 g nitrogen combines with 2.24 g oxygen. In compound C, 3.00 g nitrogen combines with 5.11 g oxygen. These results obey the following law [CPMT 1971] (a) Law of constant proportion (b) Law of multiple proportion (c) Law of reciprocal proportion (d) Dalton's law of partial pressure](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrd8cDGt5kqVDGYZFrFzsLkC_GTJT0rS6gbvpgHJtMS-sZbaAVi5UxVCojWTqq-JNUUZyUEehFy4dPp-SU4VcCVUIUqzxoQn3xflu0ghghzjHYPoFzFi0R8SO3ca1vJK__Afs0Sb7k8MEStv7tSBnz8QQtg2veyrdAEtuvP8n7dCA7PzYjlGZ6kzXA/s1920/In%20compound%20A,%201.00%20g%20nitrogen%20unites%20with%200.57%20g%20oxygen.%20In%20compound%20B,%202.00%20g%20nitrogen%20combines%20with%202.24%20g%20oxygen.%20In%20compound%20C,%203.00%20g%20nitrogen%20combines.jpg "Question: In compound A, 1.00 g nitrogen unites with 0.57 g oxygen. In compound B, 2.00 g nitrogen combines with 2.24 g oxygen. In compound C, 3.00 g nitrogen combines with 5.11 g oxygen. These results obey the following law [CPMT 1971] (a) Law of constant proportion (b) Law of multiple proportion (c) Law of reciprocal proportion (d) Dalton's law of partial pressure")