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Q: In 1808 which of the following proposed that the combination of two or more different elements form compounds?
  • A. John Dalton
  • B. Joseph. J Thomson
  • C. George Zwig
  • D. Niels Bohr
Correct Answer: Option A - In 1808, John Dalton in his atomic theory proposed that when two or more than two different kind of elements are combined in a certain ratio form compounds.
A. In 1808, John Dalton in his atomic theory proposed that when two or more than two different kind of elements are combined in a certain ratio form compounds.

Explanations:

In 1808, John Dalton in his atomic theory proposed that when two or more than two different kind of elements are combined in a certain ratio form compounds.