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Question

Consider the following laws of chemical combination with examples.
I: Law of multiple proportions: N2O,NO,NO2
II: Law of reciprocal proportions: H2O,SO2,H2S

Which is correct with examples?

A
I and II
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B
I
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C
II
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D
None of these
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Solution

The correct option is A I and II
The Law of Multiple Proportions: It was given by Dalton. When one element combines with the other elements to form two or more different compounds, the mass of one element, which combines with a constant mass of the other, bears a simple ratio to one another.
I: Law of multiple proportions :N2O,NO,NO2The Law of Reciprocal Proportions: The ratio of the weights of two elements A and B which combine separately with a fixed weight of the third element C is either the same or a simple ratio of the weights in which A and B combine directly with each other.
II: Law of reciprocal proportions :H2O,SO2,H2S


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