Which of the following pairs of substances illustrate the law of multiple proportions [CPMT 1972, 78]

\[{{H}_{2}}O\text{ and }{{D}_{2}}O\]

\[MgO\text{ and }Mg{{(OH)}_{2}}\]

Which of the following pairs of substances illustrate the law of multi

1.	Which of the following pairs of substances illustrate the law of multiple proportions [CPMT 1972, 78]
A.	CO and CO2
B.	\[{{H}_{2}}O\text{ and }{{D}_{2}}O\]
C.	\[NaCl\text{ and }NaBr\]
D.	\[MgO\text{ and }Mg{{(OH)}_{2}}\]
Answer» B. \[{{H}_{2}}O\text{ and }{{D}_{2}}O\]

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Which of the following pairs of substances illustrate the law of multiple proportions [CPMT 1972, 78]

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