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What is the purpose of vulcanisation of ...

What is the purpose of vulcanisation of rubber?

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USHA PUBLICATION-POLYMERS AND CHEMISTRY IN EVERYDAY LIFE -EXERCISE
  1. What type of polymer is Dacron ? How can be it prepared ?

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  2. How natual rubber differ from Gutta-percha ?

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  3. What is the purpose of vulcanisation of rubber?

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  4. Arrange the following in increasing order of their intermolecular forc...

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  5. Write the names and structures of monomers of the following polymers. ...

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  6. Classify the polymers on the basis of molecular forces.

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  7. How can you differentiate between addition and condensation polymerisa...

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  8. What is biodegradable polymer ? Give an example.

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  9. When phenol is treated with bromine solution in carbon tetachloride so...

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  10. Cannizzaro's reaction is not given by -

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  11. Which of the following is the suitable reagent to get alkyl chloride f...

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  12. Aldehydes on treatment with Fehling's solution give a precipitate of—

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  13. Which of the following contains -COOH group in it ?

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  14. Acctaldehyde can be converted to ethane by

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  15. Acetic acid on heating with P2O5 produces –

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  16. Complete the equation C6H5-CHO+NaOH(conc)^undersetrarrDelta

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  17. An alkene on ozonolysis gives only acetone. What is the name of alkene...

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  18. Phenol is acidic becauseis more stable than

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  19. Name the reaction, when chromyl chloride is used to convert toluene to...

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  20. Name the reagent used to distinguish between formaldehyde and formic a...

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