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Question

# Carbon forms two oxides in which percentage of carbon is 42.9% and 27.3% respectively.Above data illustrates:

A
Law of mass conservation.
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B
Law of constant proportion
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C
Law of reciprocal proportion
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D
Law of multiple proportion
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Solution

## The correct option is D Law of multiple proportionIn compound 1.There are 57.1g of O and 42.9g of C.The mass of O per gram C is 57.142.9=1.33g O per gram of C⟶(i)In compound 2,There are 72.7g of O and 27.3g of C.∴ The mass of O per gram of C=2.661.33=2g O per gram of C⟶(ii)21=21i.e. The masses of oxygen that combine with carbon are in a 2:1 ratio.The data illustrates the law of multiple proportion.

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