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Account for the following: Iron on react...

Account for the following: Iron on reaction with HCl forms `FeCl_2` and not `FeCl_3`.

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Write method of preparation of H2SO4 acid by Contact process.

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  2. What are amphoteric oxides? give two examples of amphoteric oxides?

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  3. Account for the following: Iron on reaction with HCl forms FeCl2 and n...

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  4. Give the chemistry of brown ring test.

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  5. Mention the conditions required to maximise the yield of ammonia in it...

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  6. Which form of sulphur shows paramagnetic behaviour and why ?

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  7. Unlike HCl, why HBr cannot be prepared by the action of concentrated s...

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  8. Write the reaction of white P with NaOH solution .

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  9. Write the IUPAC name of : [Fe (en)3 ]Cl3

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  10. Explain the manufacture of sulphuric acid by contact process.

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  11. What are inter halogen compounds ?

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  12. Name two oxoacids of sulphur.

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  13. How will you manufacture ammonia by Haber process?

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  14. Write any two uses of inert gases.

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  15. State the hybridisation of the central atom and draw the structure of ...

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  16. The first ionisation enthalpy of nitrogen is higher than that of oxyge...

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  17. Give the laboratory preparation of sulphur dioxide and write the chemi...

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  18. SF4 is easily hydrolysed whereas SF6 is not easily hydrolysed. Why ?

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  19. Although electron gain enthalpy of fluorine is less negative as compar...

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  20. Dry chlorine does not act as a bleaching agent. Why?

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