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An important postulate of Dalton's atomi...

An important postulate of Dalton's atomic theory is

A

an atom contains electrons, protons and neutrons

B

atom can neither be created nor destroyed nor divisible

C

all the atoms of an element are not identical

D

all the elements are available in nature in the form of atoms.

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The correct Answer is:
B
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According to Dalton's atomic theory, all matter whether an element, a compound or a mixture is composed of small particles called atoms which can neither be created nor destroyed during a chemical reaction. Dalton's theory provides a simple explanation for the laws of chemical combination. He used his theory to explain law of conservation of masses, law of constant proportions and law of multiple proportions, based on various postulates of the theory. Dalton was the first scientist to use the symbols for the elements in a very specific sense. When he used a symbol for an element he also meant a definite quantity of that element, that is one atom of that element. Which postulate of Dalton's atomic theory is the result of the law of conservation of mass?

Amongst the following which is not a postulate of Dalton's atomic theory

What are the main postulates of Dalton's atomic theory ? What were its limitations ? How has the theory been modified ?

According to Dalton's atomic theory, all matter whether an element, a compound or a mixture is composed of small particles called atoms which can neither be created nor destroyed during a chemical reaction. Dalton's theory provides a simple explanation for the laws of chemical combination. He used his theory to explain law of conservation of masses, law of constant proportions and law of multiple proportions, based on various postulates of the theory. Dalton was the first scientist to use the symbols for the elements in a very specific sense. When he used a symbol for an element he also meant a definite quantity of that element, that is one atom of that element. Which postulate of Dalton's atomic theory explains law of definite proportions?

State any two postulates of Dalton's atomic theory .

Which of the following is not the basic postulates of Dalton's atomic theory ?

OP TANDON-BASIC PRINCIPLES-OBJECTIVE QUE.
  1. If 6 litre of H(2) of Cl(2) are mixed and exploded in an eudiometer, t...

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  2. The law of constant proportions was enunciated by:

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  3. An important postulate of Dalton's atomic theory is

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  4. Which one of the following relationship is correct?

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  5. A(1)g of an element gives A(2)g of its oxide. The equivalent mass of t...

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  6. A(1)g of an element gives A(2)g of its chloride, the equivalent mass o...

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  7. Which one of the relationship is wrong?

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  8. In m(1)g of a metal A displaces m(2)G of another metal B from its salt...

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  9. When the specific heat of a metallic element is 0.214 cal g^(-1) the ...

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  10. Approximate atomic mass of an element is 26.89. if its equivalent mass...

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  11. When an element forms an oxide in which oxygen is 20% of the oxide by ...

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  12. 0.32g of a metal gave on treatment with an acid 112mL. Of hydrogen at ...

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  13. 74.5g of a metallic chloride contains 35.5 g of chlorine . The equival...

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  14. The procut of atomic mass and specific heat of any element is a consta...

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  15. The molecular mass of chloride MCl, is 74.5 . The equivalent mass of t...

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  16. 1 g of hydrogen is found to combine with 80g of bromine 1 g of calcium...

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  17. 28g of iron displace 3.2 g of copper from a solution of copper sulphat...

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  18. The specific heat of a metal of atomic mass 32 is likely has a vapour ...

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  19. The equivalent mass of an element is 4. its chloride has a vapour dens...

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  20. the equivalent mass of iron in the reaction. 3Fe+4H(2)OrarrFe(2)O(4)...

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