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Formaldehyde polymerises to give...

Formaldehyde polymerises to give

A

paraldehyde

B

paraformaldehyde

C

formalin

D

formic acid

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NCERT BANGLISH-CARBONYL COMPOUNDS-SELF EVALUATION ((C) Answer not exceeding sixty words :)
  1. Formaldehyde polymerises to give

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  2. Write any three methods of preparing formaldehyde from alcohol.

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  3. How does formaldehyde react with (i) NH(3), (ii) CH(3)MgI followed by ...

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  4. Illustrate the reducing property of acetaldehyde with examples.

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  5. Give nucleophilic addition reaction of acetaldehyde with (a) NaHSO(3),...

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  6. Discuss aldol condensation.

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  7. How are the following conversions carried out ? (i) benzaldehyde fr...

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  8. Distinguish acetaldehyde from acetone.

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  9. How will you distinguish between formaldehyde and acetaldehyde.

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  10. Write the differences between acetophenone and benzophenone.

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  11. Identify (B), (C) and (D) underset("Acetone")(CH(3)-overset(O)overse...

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  12. How will you synthesise acetaldehyde from formaldehyde ?

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  13. How will you distinguish between 2-pentanone and 3-pentanone.

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  14. How will you synthesise acetone from acetaldehyde ?

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  15. Give the IUPAC names of (i) (i) {:(CH(3)-CH-" C"-CH-OCH(2)CH(3)),(" ...

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  16. An organic compound, C(2)H(4)O gives a red precipitate when warmed wit...

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  17. Write the structural formula of the main product formed when , (i) The...

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  18. How will you synthesise 2-butanone from ethyl alcohol ? Clue : Steps...

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  19. What happens when the following alcohol vapours are passed over heated...

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  20. Which compounds on Clemmenson reduction give (a) 2-methyl propane, (b)...

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  21. What happens when the following compounds are treated with dilute NaOH...

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