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What happens when :-Silicon dioxide is t...

What happens when :-Silicon dioxide is treated with hydrogen fluoride.

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 3-EXERCISE
  1. Give a example of neutral electrophile

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  2. How will you detect the. presence of sulphur in an organic compound?

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  3. C-=C bond length is shorter than C=C and C— C bond lengths— Why?

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  4. The solubility of zinc phosphate in water is S mol L^-I Derive the mat...

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  5. What is common ion effect? Cite an example.

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  6. Write the conjugate base of [Al(H2O)6]^(3+).

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  7. The following equilibrium is established during thermal dissociation o...

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  8. If the equilibrium constants of the following equilibriam SO2 + 1/2...

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  9. What happens when Aluminium is treated with dilute NaOH.

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  10. What happens when :-Silicon dioxide is treated with hydrogen fluoride.

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  11. Explain : Carbon shows catenation but silicon does not.

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  12. Draw the shape of B2H6 molecule.

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  13. How will you distinguish between each of the following pairs of compou...

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  14. How will you distinguish between each of the following pairs of compou...

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  15. How will you carry out of the following trannsformations :-

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  16. How will you carry out of the following trannsformations :-

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  17. Electrophile used in the nitration of benzene is

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  18. Give,example of the following reactions :-Gattermann aldehyde synthesi...

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  19. Give,example of the following reactions :-Kolbe electrolysis method.

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  20. How can thiophene present in a sample of impure benzene be identified ...

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