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Name the acid that renders aluminium pa...

Name the acid that renders aluminium passive . Why ?

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Name the acid that render aluminium passive. Why ?

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SURA PUBLICATION-SELF-EVALUATION TEST 2 MARKS-ANSWER ANY QUESTIONS (CHEMISTRY)
  1. Volume percentage decreases with increases in temperature becaus...

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  2. Roasting is the process in which the ore is heated in the presence of...

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  3. Name the acid that renders aluminium passive . Why ?

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  4. What is meant by binary solution ?

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  5. Fill in the blanks: (i) Conductivity of water has resulted from the ...

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  6. The mass of the molecule of an element or compound is measured i...

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  7. Calculate the number of moles in 2g of NaOH .

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  8. A' is a blue coloured crystaline salt . On heating it loses blue...

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  9. Can a nickel spatula be used to stir copper sulphate solution ?...

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  10. Anything that has mass and occupies space is called

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  11. True or False. If false give the correct statement: (i) In a solutio...

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  12. Write the different types of isotopes of oxygen and its percent...

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  13. Define Volume percentage .

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  14. What is the melting point of aluminium ?

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  15. Define endothermic reaction . Give an example .

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  16. A is a silvery white metal. A combines with O2 to form B at 800^(@...

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  17. 2.82 g of glucose is dissolved in 30 g of water. Calculate the mole fr...

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  18. True or False. If false give the correct statement: (i) Organic comp...

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  19. How does the property vary in periods and in groups ?

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  20. Butter is an example of one type of colloidal solution .Name i...

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