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Explain why Aldehydes and ketones underg...

Explain why Aldehydes and ketones undergoes nucleophilic addition while alkenes undergoes electrophilic addition though both are unsaturated compounds.

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The carbon-oxygen double bond in carbonyl compounds is polarised due to higher electronegativity of oxygen relative to carbon. Hence the carbonyl carbon is an electrophilic and carbonxyl oxygen is a nucleophilic addition reaction.

`to` Alkenes contain which is a source of electron density to electrophilies add no to C =C to give addition products. Hence alkenes undergo electrophilic addition reaction.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-ORGANIC COMPOUNDS CONTAINING C,H AND O-SHORT ANSWER QUESTIONS
  1. What is Tollens reagent ? Explain its reaction with Aldehydes.

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  2. Write the oxidation products of : Acetaldehyc, Acetone and Acetophenon...

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  3. Explain why Aldehydes and ketones undergoes nucleophilic addition whil...

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  4. Which the IUPAC name of CH(3)CH(2)CH(Br) CH(2)COOH

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  5. Which the IUPAC name of Ph. CH(2)COCH(2)COOH

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  6. Which the IUPAC name of CH(3).CH(CH(3))CH(2)COOC(2)H(5)

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  7. Arrange the following in the increasing order of their acidic strength...

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  8. Describe the Cross aldol condensation .

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  9. Describe the Decarboxylation.

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  10. Explain the role of electron withdrawing and electron releasing groups...

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  11. Draw the structure of the Acetaldehydedimethylacetal .

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  12. Draw the structure of the ethylene ketal of hexan-3-one.

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  13. Draw the structure of the methyl hemiacetal of formaldehyde.

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  14. An organic compound contains 69.77% carbon, 11.63% hydrogen and rest o...

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  15. Explain Nucleophilic addition reaction mechanism of aldehydes and keto...

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  16. Write any two methods for the preparation of Aldehydes.

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  17. Write any two methods for the preparation of Ketones.

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  18. Explain Clemenson's reduction and Wolf Kishmer reduction reactions.

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  19. What is haloform reaction ? Give equation .

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  20. What is Cannizaro reaction ? Give equation .

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