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Atoms

Law of consta...

Question

Law of constant proportion states that a chemical compound always contains the same elements combined in a fixed proportion by mass.

A

True

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B

False

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Solution

The correct option is A True

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Q. A chemical compound always contains the elements combined in fixed proportion by mass.

Q. Statement 1 (S1): A chemical compound always contains the same elements combined in the same proportion by mass.
Statement 2 (S2): The law of constant proportions is also known as the law of chemical combination.

Q. Statement 1 (S1): A chemical compound always contains the same elements combined in the same proportion by mass. Statement 2 (S2): The above postulate is the result of the law of conservation of mass.

In law of constant proportion, the word constant means that the mass ratio of the elements in a chemical compound will always remain same.

Q. According the law of definite proportion a given chemical compound always contains its component elements in fixed ratio (by mass) . But if we get the proportion in percentage and the percentage differs by one to two percent. Is it still valid

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