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Find the mass of 2.5 mole of oxygen...

Find the mass of 2.5 mole of oxygen atom .

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SURA PUBLICATION-SELF-EVALUATION TEST 2 MARKS-ANSWER ANY QUESTIONS (CHEMISTRY)
  1. Find the mass of 2.5 mole of oxygen atom .

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  2. Volume percentage decreases with increases in temperature becaus...

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

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

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  5. What is meant by binary solution ?

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

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

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

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

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

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  11. Anything that has mass and occupies space is called

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

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

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  14. Define Volume percentage .

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  15. What is the melting point of aluminium ?

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  16. Define endothermic reaction . Give an example .

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

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  18. 2.82 g of glucose is dissolved in 30 g of water. Calculate the mole fr...

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

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

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