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The mass is neither created nor destroye...

The mass is neither created nor destroyed during chemical combination of matter is_______ .

A

Law of combination

B

Law of conservation of mass

C

Law of combination of mass

D

Law of definite composition

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The correct Answer is:
B
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Amongst the following statements, select the set having statements which was porposed by Dalton. (1) All the atoms of a given element have identical properties including identical mass. Atoms of different elements differ in mass. (2) When gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same T & P (3) Chemical reaction involve reorganization of atoms. These are neither created nor destroyed in a chemical reaction. (4) Matter consists of indivisible atoms

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?

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?

Atoms are neither created nor destroyed in a chemical reaction. This postulate was given by:

Assertion: Energy can neither be created nor destroyed. Reason: The principle of conservation of energy cannot be proved.

MARVEL PUBLICATION-BASIC CONCEPT OF CHEMISTRY-TEST YOUR GRASP
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  4. Which of the following is an element ?

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  6. Which of the following has maximum number of molecules ? (C = 12, O = ...

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  7. Which of the following weighs the maximum ? (O = 16)

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  9. The number of potassium atoms present in 1 equivalent of KMnO4 is .

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  11. 1 amu is equal to

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  12. Which of the following contains maximum number of atoms ?

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  16. The number of molecules in 16 g of methane is

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  18. How much of NaOH is reuired to neutralise 1500 cm^(3) of 0.1 N HCl (Na...

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  20. 30g Mg and 30g O(2) are reacted and the residual mixture contains:

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  21. In the chemical reaction, K2 Cr2 O7 + xH2 SO4 + ySO2 rarr K2SO4 + Cr2(...

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