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Aldehydes and ketones give addition reac...

Aldehydes and ketones give addition reaction with

A

Hydrazine

B

Phenyl hydrazine

C

Semicarbazide

D

Hydrogen cyanide

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The correct Answer is:
D
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Aldehydes and ketones give addition reactions with

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Both carbonyl compounds and acid derivatives though they contain grouping yet the reactions given by them are entirely different. As Aldehydes and Ketones give addition product with a nucleophile, while carboxylic acid derivatives give nucleophilic acyl substitution through addition/elimination mechanism. Where X- = -Cl - O-overset(O)overset(||)C-R-OR, -NR(R) etc. Why aldeydes and Ketones give nucleophilic addition reaction while acid derivatives prefer nucleophilic acyl substititution reaction?

Aldehydes and ketones are

Aldehyde and ketones are

ERRORLESS -ALDEHYDES AND KETONES -Ordinary Thinking (Objective Questions) Properties
  1. underset(aq.)(3HCHO) overset("cooled")hArr X.X is

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  2. An aromatic compound 'X' with molecular formula C(9)H(10)O gives the f...

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  3. Aldehydes and ketones give addition reaction with

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  4. Only an aldehyde having….can undergo the aldol condensation

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  5. Identify the organic compound which on heating with strong solution of...

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  6. Benzaldehyde and acetone can be best distinguished using ……..

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  7. The correct sequence of steps involved in the mechanism of cannizzaro'...

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  8. An organic compound 'A' burns with a sooty flame. It is negative towar...

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  9. Methyl ketones are usually characterised through

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  10. Which of the following compounds is most reactive towards nucleophilic...

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  11. To distinguish between 2-pentanone and 3-pentanone which reagent can b...

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  12. The dipeptide Gln-Gly on treatment with CH(3)COCI followed by aqueous ...

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  13. The most stabl enol tautomer of MeCOCH(2)CO(2)Et is

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  14. In the following species, the one which is likely to be the intermedia...

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  15. An optically active compound having molecular formula C(8)H(16) on ozo...

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  16. Bromination of PhCOMe in acetic acid medium produces mainly

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  17. Cinnamci acid is fomed when C(6)H(5)-CHO condenses with (CH(3)CO(2))O ...

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  18. Aldehydes and ketones can be reduced to hydrocarbon by using

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  19. Which of the following will form two isomers with semi carbazide

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  20. Predict the product

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