Home Chemistry Some Basic Concepts of Chemistry Laws of Chemical Combination 4.4 g of an oxide of nitrogen gives 2.24 L o…
Chemistry Some Basic Concepts of Chemistry Laws of Chemical Combination Single Correct MCQ
Published on: August 14, 2026

4.4 g of an oxide of nitrogen gives 2.24 L of nitrogen and 60 g of another oxide of nitrogen gives 22.4 L of nitrogen at S.T.P. The data illustrates:

A
Law of conservation of mass
B
Law of constant proportions
C
Law of multiple proportions
D
Law of reciprocal proportions

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The correct answer is:
C

In First Oxide : Mass of 2.24 L of nitrogen at STP
Mass of oxygen
In Second Oxide : Mass of 22.4 L of nitrogen at STP
Mass of oxygen
In second oxide 2.8 g of nitrogen combines with 3.2 g of oxygen.
Keeping the mass of nitrogen same in both the oxides, the different masses of oxygen which combines with 2.8 g of nitrogen are or , This is a simple whole number ratio. This illustrates the law of multiple proportions.

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