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The % of copper and oxygen in samples of...

The `%` of copper and oxygen in samples of `CuO` obtained by different methods were found to be the same. This proves the law of :

A

Constant Proportion

B

Reciprocal Proportion

C

Multiple Proportion

D

Conservation of mass.

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The correct Answer is:
A
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NARAYNA-SOME BASIC CONCEPTS OF CHEMISTRY-C.U.Q
  1. One part of element A reacts with two parts of another element B. 6 pa...

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  2. The law of conservation of mass holds good for all of the following ex...

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  3. The % of copper and oxygen in samples of CuO obtained by different met...

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  4. The mass of nitrogen per grams in hydrazine is exactly one and half th...

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  5. Nitrogen forms five stable oxides with oxygen of the formula, N(2)O, N...

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  6. The law of multiple proportion is illustrated by

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  7. An unbalanced chemical equation is against the law of

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  8. Law of reciprocal proportions was establish by

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  9. ''The total mass of reactants is always equal to the total mass of pro...

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  10. In the reaction, "Hydrogen (g)"+"Oxygen (g)"rarr"water vapour", the ra...

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  11. The law of multiple proportion is illustrated by the two compounds ...

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  12. Which of the following is an octa-atomic molecule

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  13. Which of the following is a penta - atomic molecule

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  14. If 1//6, in place of 1//12, mass of carbon atom is taken to be the rel...

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  15. Choose the correct statement The use ""^(12)C Scale has suspended th...

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  16. Which one of the following properties of an element is not variable ?

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  17. 10 grams of each O(2),N(2) and Cl(2) are kept in three bottles. The co...

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  18. The atomicity of a species is x and its atomic weight is y. The molecu...

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  19. Avagadro's number is the number of molecules present in

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  20. Atomicity is the number of

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