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Question

12g of carbon combines with 64g sulphur to form CS2. 12g carbon also combines with 32g oxygen to form CO2. 10g sulphur combines with 10g oxygen to form SO2. These data illustrate the

A
Law of multiple proportions
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B
Law of definite proportions
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C
Law of reciprocal proportions
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D
Law of gaseous volumes
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Solution

The correct option is D Law of reciprocal proportions
Given,
12g C combines with 64g S to give CS2
12g C combines with 32g O to give CO2
Also, 10gS combines with 10gO to give SO2
In CS2 C:S=12:64=3:16
In CO2 C:O=12:32=3:8
From, CS2 & CO2, S:O=16:8=2:1
Also in SO2 S:O=10:10=1:1
2:1 is multiple of 1:1
11×2=21
Law of reciprocal proportions is illustrated here.

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