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

True

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False

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Solution

The correct option is A
True

According to law of constant proportion in a given chemical compound the elements are always present in definite proportions by mass. Here, the word constant means mass ratio of elements in a substance will be same irrespective of place.

Example: Mass ratio of Hydrogen and Oxygen in $H_{2} O$ will always be 1:8, it doesn't matter how much amount of $H_{2} O$ you are considering.

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Similar questions

State true or false. In law of constant proportion, the word constant means that the mass ratio of the elements in a chemical compound is same everywhere in the universe.

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

Law of constant proportion states that:

In a chemical substance the elements are NOT present in a definite proportion by mass.

Q. Law of constant proportion given by Joseph Proust that a chemical compound always consists of same element combined together in the same proportion by mass but there are some compound which are allotropic for example hydrogen and oxygen forms compound water which can be H2O or D2O that is heavy oxygen so this law should be wrong. This is same compound but with different mass

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

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