Law of multiple proportions - class-XI

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Question 1 of 45

Among the following pairs of compounds, the one that illustrates the law of multiple proportions is:

Select Your Answer:

$NH _{3}$ and $NCl _{3}$

$H _{2}S$ and $SO _{2}$

$CuO$ and $Cu _{2}O$

$CS _{2}$ and $FeSO _{4}$

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