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Which of the following do not give aldol...

Which of the following do not give aldol condensation reactions ?

A

Formaldehyde

B

Acetaldehyde

C

Dimethyl ketonc

D

Propionaldehyde

Text Solution

Verified by Experts

The correct Answer is:
A
Formaldehyde has no alpha hydrogen.
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ACCURATE PUBLICATION-ALDEHYDES ,KETONES AND CARBOOXALIC ACIDS-PART-A (ALDEHYDES AND KETONES -MULTIPLE CHOICE QUESTIONS (1 MARK))
  1. Which of the following reactions may be associated with aldehyde and k...

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  2. Ketones are comparatively less reactive than aldehydes. It is due to

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  3. Which of the following do not give aldol condensation reactions ?

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  5. Formaldehyde and lactose are combined to produce throat lozenges named...

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  6. The formula of haloform is :

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  7. Formaldehyde condenses with phenol in the presence of dilute H2 SO4 to...

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  8. On heating acetaldehyde, with Fehling's solution, we get a precipitate...

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  9. Which of the following will not give addition reaction with NaHSO3

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  10. Write the empirical formula of the compounds having the molecular form...

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  11. Aldehyde and ketone have same general formula for homologous series

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  12. Oxidation of primary alcohol gives :

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  13. Nucleophilic addition reactions are catalyzed by:

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  14. Ethanal is prepared industrially by air oxidation of ethylene using pa...

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  15. Acetaldehydc cyanohydrin on acid hydrolysis yields in

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  16. Acetal on acid hydrolysis generates

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  17. Which of the following is a symmetrical ketone ?

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  18. In base catalyzed reaction of carbonyl compound the catalyst

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  19. What is the other name of ester-interchange reaction ?

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  20. Complete the following reaction : C H 3 C H 2 B r + K O H ( a q ) →

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