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Question

Name the theory that was based on the conclusions of the law of conservation of mass and the law of constant proportions?

A
Dalton's atomic theory
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B
Lavoisier's theory
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C
Democratus' atomic theory
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D
Proust's atomic theory
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Solution

The correct option is A Dalton's atomic theory

Dalton's atomic theory was based on the laws of chemical combination i.e., 'law of conservation of mass' and the 'law of constant proportions'. The two postulates which were supported by the law of combinations are:

  • Atoms combine in the ratio of small whole numbers to form compounds. The relative number and kinds of atoms combining are constant in a given compound.
  • Atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction.

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