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What are thermoplastic polymers? Give an...

What are thermoplastic polymers? Give an example.

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These are linear or slightly branched long chain molecules capable of repeatedly softening on heating and hardning on cooling.
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SUNSTAR PUBLICATION-ANNUAL EXAM QUESTION PAPER MARCH - 2018-PART - D
  1. write any two differences between lyophilic and lyophobic colloids .

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  2. What is heterogeneous catalysis? Give an example.

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  3. Give an expression for Freundlich adsorption isotherm.

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  4. Write the equations for the steps in SN-1 mechanism of the convertion ...

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  5. Explain fitting reaction .

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  6. Name the reagent used in the dehydrohalogenation of haloalkanes.

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  7. Write the mechanism of acid catalysed dehydration of ethanol to ethene...

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  8. Between phenol and alcohol which is more acidic ? Why ?

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  9. Explain Rosenmund reduction with equation.

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  10. How does propanone (CH(3)COCH(3)) reacts with hydrazine? Give equatio...

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  11. Name an oxidising agent used in the Etard's reaction

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  12. Explain carbyl amine reaction with equation.

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  13. How does nitrobenzene is reduced to aniline ? Give equation.

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  14. Write the IUPAC name of

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  15. Write Howorth structure of ''Lactose''.

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  16. (i) What are non - essential amino acids ? (ii) Write zwitter ionic...

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  17. Name the nitrogenous base present in RNA but not in DNA.

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  18. Explain the preparation of Nylon - 6 , 6 with equation.

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  19. What are thermoplastic polymers? Give an example.

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  20. Write the structure of isoprene (2-methyl -1,3-butadiene).

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