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Write the principle involved in zone ref...

Write the principle involved in zone refining .

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The impurities are more soluble in the molten state of metal than in solid state.
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OSWAAL PUBLICATION-SOLVED PAPER II PUC JULY - 2016-PART -E
  1. Write the principle involved in zone refining .

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  2. Explain S(N)2 mechanism taking an example of chloromethane.

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  3. Write the general equation for the reaction of primary alcohol with SO...

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  4. CH(3)Br + AgF rarr CH(3)F + AgBr. Name the reaction.

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  5. p-dichlorobenzene has higher melting point than those of ortho and met...

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  6. i) Identifiy 'A' and 'B' in the following equations. CH(3)-CH=CH(2) ...

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  7. What is Lucas reagent ? How it is used to identify secondary alcohols?

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  8. Explain Williamson's ether synthesis.

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  9. i) How does benzaldehyde reacts with acetophenone in presence of a dil...

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  10. i) How does benzaldehyde reacts with acetophenone in presence of a dil...

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  11. Among formic acid and acetic acid, which is more acidic ? Give reason...

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  12. i) Explain the reduction of nitrocompounds to amines with an examples....

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  13. i) Explain the reduction of nitrocompounds to amines with an examples....

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  14. How is aniline converted in phenyl isocyanide ? Write the equation.

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  15. Write Haworth structure for maltose.

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  16. What is nucleoside?

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  17. What are fibrous proteins Give an example .

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  18. Name the monomers usedl in the manufacture of Nylon-6, 6.

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  19. What is vulcanisation of rubber?

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  20. Give an example for biodegradable polymer.

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