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What is the nature of the following oxid...

What is the nature of the following oxides :
(i) `CO (ii) Al_(2)O_(3) (iii) CO_(2) (iv) CaO (v) SO_(3)` ?

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(i) neutral (ii) amphoteric (iii) acidic (iv) basic (v) acidic
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What is the oxidation state of sulphur in (i) PbS (ii) SO_(2) (iii) SO_(4)^(2-) (iv) SCl_(2) ?

Give the n factors for the following changes - (i) Na_(2) CO_(3) rarr NaHCO_(3) (ii) Al_(2) (SO_(4))_(3) rarr Al(OH)_(3) (ii) Na_(2) S_(2) O_(3) rarr S_(4) O_(6)^(-2)

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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Problems For Practice
  1. Select the acidic and basic anhydrides from the following : (i) Na(2...

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  2. Give two examples of mixed oxides.

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  3. What is the nature of the following oxides : (i) CO (ii) Al(2)O(3) (...

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  4. What happends when water is dropped over Na(2)O(2) ?

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  5. Why is O(3) more reactive than O(2) ?

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  6. Name two compounds in which oxygen has oxidation states different from...

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  7. How does sulphur normally exist ?

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  8. What is the hybridisation of sulphur in H(2)SO(4) ?

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  9. What is oil of vitriol ?

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  10. What is the IUPAC name of H(2)S(4) gas ?

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  11. What is the oxidation state of sulphur in (i) PbS (ii) SO(2) (iii) SO(...

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  12. What happens to sugar when conc. H(2)SO(4) is dropped on it ?

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  13. Which allotropic form of sulphur is not sharp melting ?

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  14. Which chemical is used to remove a fresh iodine stain ?

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  15. What are the colours of the following sulphides ? (i) CoS (ii) CuS (...

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  16. Out of 1 M H(2)SO(4) and 1 N H(2)SO(4), which is more concentrated an...

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  17. Which substance removes As(2)O(3) in contact process ?

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  18. Name the halogens that can form true chemical bonds with noble gases?

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  19. Give two compounds in which iodine behaves as a cation.

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  20. Hybridisation and shape of BrF(5) is :

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