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Explain the following: Reactivity of Al ...

Explain the following:
Reactivity of Al decreases if it is dipped in `HNO_3`.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Explain the following: Reactivity of Al decreases if it is dipped in H...

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  2. List two metals which are easy to cut .

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  3. what happen when a piece of zinc is added to copper sulphate solution?

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  4. Name two amphoteric oxide

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  5. Name one non-metal and one metal which are in liquid state at room tem...

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  6. Which is more metallic: sodium or aluminium?

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  7. What can be seen when strip of copper metal is placed in a solution of...

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  8. Zinc displaces copper from a solution of CuSO4 because zinc is .........

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  9. Magnesium liberates ………..gas on reacting with boiling water.

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  10. The white powder formed when magnesium ribbon burns in oxygen it forms...

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  11. Which of the following displacement reaction cannot accur? CuSO(4(aq...

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  12. Is following reactions will occurs?explain: MgSO4(aq)+Fe(s)rarrFeSO4(...

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  13. Give chemical equations to show that: hydrogen gas is passed over heat...

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  14. Give the reactions when red hot iron reacts with steam

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  15. Give chemical equations to show that: sodium oxide reacts with water.

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  16. Name two metals which are lighter than water.

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  17. Which metal is used in Fittig reaction ?

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  18. Complete the following equations: Fe(s)+H2O(g)overset(Red heat)rarr

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  19. Complete and balance the following equtions: Na2O+H2Orarr

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  20. Complete the following equations: Ag^(+)(aq)+Cu(s)rarr

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  21. Complete the following equations: MgO+Cu rarr

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