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Explain why is air sometimes considered ...

Explain why is air sometimes considered as a heterogeneous mixture.

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When dust or snoke is mixed with air, it is considered as a heterogeneous mixture.
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CHHAYA PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY-WARM UP EXERCISE
  1. How will you separate the constituents of a sample of gun powder?

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  2. How will you separate the components from a mixture of common salt and...

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  3. Explain why is air sometimes considered as a heterogeneous mixture.

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  4. State whetehr a mixture or a compound is formed when conc. H(2)SO(4) i...

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  5. Name two drugs which causes intoxication when consumed.

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  6. How many significant figures are there in each of following number: (i...

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  7. Expres the following up to three significant figures: (i) 4.309251 (...

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  8. Is it correct to consider the law of conservation of mass as the law o...

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  9. Mention the limitations of the law of conservation of mass.

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  10. Mention the limitations of the law of constant proportions.

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  11. On heating of 4.9g of KClO(3),1.92g" of "O(2) is evolved and 2.97g of ...

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  12. Is the converse of the law of definite proportions always correct? Exp...

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  13. State gay-lussac's law of gaseous volumes.

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  14. 10.1g of HCl is mixed with 6.3g of NaHCO(3). Calculate the mass of CO(...

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  15. According to Dalton's theory, 'during chemical combination, atoms of d...

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  16. Define an atom in view of Dalton's atomic theory.

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  17. Which postulate of Dalton's atomic theory is more or less valid even t...

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  18. Mention of limitations of Dalton's atomic theory.

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  19. What are Daltonide compounds and Berthollide compounds?

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  20. Mention a compound where the constituents atoms are not present in a s...

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