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Aldehydes and ketones react with oine mo...

Aldehydes and ketones react with oine molecule of analcohol to form compounds called hemiacetals, in which there is one hydroyl group and one either-like group. Reaction of a hemiacetal with a second molecule of alcohol gives an acetal and a molecule of water. We study this reaction

Draw structural formulas for the hemicetal and acetal formed from these reagents. The stoichiometry of each reaction is given in the problem.

Product R is

A

B

C

D

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The correct Answer is:
B
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Aldehydes and ketones react with one molecule of an alcohol to form compounds called hemiacetals, in which there is one hydroxyl group and one ether- like group. Reaction of a hemiacetal with a second molecule of alcohol gives an acetal and a molecule of water. We study this reaction Draw structural formulas for the hemiacetal and acetal formed from these reagents. The stoichiometry of each reaction is given in the problem. Product Q is .

Aldehydes and ketones give addition reactions with

Aldehydes and ketones give addition reaction with

One molecule of glucose and one molecule of galactose form:

Draw the structural formula of 1-phenyl Propan-1-one molecule.

(Major product in hemiacetal form) :

Assertion (A) Aldehydes and ketones, both react with Tollen's reagent to form silver mirror. Reason (R) Both, aldehydes and ketones contain a carbonyl group.

MOTION-CARBONL COMPOUNDS-EXERCISE -2 (LEVEL-II)
  1. Which one of the following is mixed ketone (Aliphatic & aromatic):

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  2. Stability of hydrates of carbonyl compounds depends on:

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  3. Whcih of following give positive test with 2,4-DNP?

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  4. Fehling solution gives red precipatic with :

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  5. Silver mirror test with Tollen's reagent is give by :

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  6. Which one of the following compounds will not give aldol:

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  7. Schiff's reagent gives pink colour with :

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  8. Which of the following compound will give positive Tollen’s test

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  9. Carbonyl group show characteristic reaction of nucleophilic addition i...

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  10. Carbonyl group show characteristic reaction of nucleophilic addition i...

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  11. Aldehydes and ketones react with oine molecule of analcohol to form co...

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  12. Aldehydes and ketones react with one molecule of an alcohol to form co...

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  13. Aldehydes and ketones react with oine molecule of analcohol to form co...

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  14. Match list-l with list-ll and select the correct answer using the code...

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  15. Column l Column ll (Reagent used) (P) Al(OCHMe(2))(3) or H(2)/N...

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  16. Two isomeric Ketones, 3-pentanone and 2-pentanone can be distinguished...

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  17. Mixture of Ph–CHO&HCHO is treated with NaOH then Cannizzaro reaction i...

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  18. PhCHO + HCHO overset("Conc.KOH")(rarr) Correct statement regarding r...

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