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What do you understand by molecules and ...

What do you understand by molecules and how are they classified on the basis of the type of elements ?

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ICSE-SOME BASIC CONCEPTS OF CHEMISTRY -REVIEW EXERCISES
  1. Determine the molecular formula of water on the basis of Avogadro's hy...

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  2. Define an atom.

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  3. What do you understand by molecules and how are they classified on the...

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  4. What do you understand by relative atomic mass of an element ?

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  5. Define an amu.

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  6. What is meant by the isotopes ? Explain with an example.

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  7. Give 4 uses of isotopes.

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  8. What are isotones ? Explain with examples.

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  9. Suggest a method by which chlorine atoms with whole number atomic weig...

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  10. Oxygen occurs in nature as a mixture of isotopes ""^16O, ""^17O " and ...

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  11. Define equivalent weight. How would you calculate the equivalent weigh...

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  12. Describe the following methods for determination of equivalent weight ...

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  13. State Faraday's laws of electrolysis. How would you determine the equi...

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  14. Find the equivalent mass of H3PO4 in the following reaction : Ca(OH...

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  15. 1.50 g of a metal on being heated in oxygen gives 2.15 g of its oxide....

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  16. 4.215 g a metallic carbonate was heated in a hard glass tube and CO2 e...

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  17. A sample of zinc oxide contains 80.25% zinc. Calculate the equivalent ...

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  18. 0.05 g of magnesium when treated with dilute HCI gave 51 mL of hydroge...

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  19. A chloride of a metal contains 47.23% of the metal. Find out the equiv...

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  20. Two oxides of copper contain respectively 88.8% and 79.91 % of copper....

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