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Ethanal undergoes aldol condensation but...

Ethanal undergoes aldol condensation but trichloroethanal does not.

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Ethanal has `alpha`-hydrogen atoms which are necessary for the aldol condensation reaction to take place but trichloroethanal does not have `alpha`-hydrogen atoms.
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Describe aldol condensation.

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A : Ethanal undergoes aldol condensation. R : Ethanal has four alpha -H atoms.

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ICSE-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS-EXERCISE (PART-II DESCRIPTIVE QUESTIONS) (VERY SHORT QUESTIONS)
  1. Write the chemical reaction for getting 2-propanol from ethanal.

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  2. Why ketones do not easily unergo oxidation?

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  3. Ethanal undergoes aldol condensation but trichloroethanal does not.

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  4. Benzaldehyde and formaldehyde do not undergo condensation on treatment...

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  5. How will you distinguish between acetone and ethyl alcohol?

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  6. Which of the following compounds is used in the preservation of biolog...

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  7. What are the following: Fehling's solution

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  8. What are the following: Tollens' reagent

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  9. What are the following: Baeyer's reagent

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  10. What are the following: Brady's reagent?

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  11. Write the chemical name and structure of Rochelle salt.

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  12. What type of reactions are given by the carbonyl group in aldehydes an...

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  13. Name two methods commonly used to convert a carbonyl (gtC=O) group int...

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  14. What type of aldehydes and ketones undergo aldol condensation?

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  15. What type of aldehydes undergo Cannizzaro's reaction?

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  16. Which ketones undergo iodoform test?

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  17. Name the aldehyde which does not give Fehling solution test.

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  18. Name one reagent used to convert toluene into benzaldehyde.

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  19. Give the chemical reaction, when ethanal is heated with HI.

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  20. Name an industrial product manufactured from methanal.

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