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The Law of Constant Proportions is also called the law of:
ADefinite proportions
BMultiple proportions
CDoubtful proportions
DVariable proportions
Answer & Solution
Correct answer: A. Definite proportions
1. The law says a compound always has the same composition.
2. Its proportions never change from sample to sample.
3. It is also known as the Law of Definite Proportions.
4. So the answer is definite proportions.
_Source: NCERT Class 9 Science, Ch 9 'Atomic Foundations of Matter'_
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