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Aldehydes and ketones undergo...

Aldehydes and ketones undergo

A

electrophilic addition

B

electrophilic substitution

C

nucleophilic addition

D

nucleophilic substitution.

Text Solution

Verified by Experts

The correct Answer is:
C
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How would you account for the following : (i) Aldehydes are more reactive than ketones towards nucleophiles. (ii) The boiling points of aldehydes and ketones are lower than those of corresponding acids. (iii) Aldehydes and ketones undergo a number of addition reactions.

(a) How many you account for the following : (i) Aldehydes are more reactive than ketones towards nucleophiles. (ii) The boiling points of aldehydes and ketones are lower than of the corresponding acids. (iii) The aldehydes and ketones undergo a number of addition reactions. (b) How will you distinguish between these compounds: (i) Acetaldehyde and benzaldehyde (ii) Propanone and propanol

Knowledge Check

  • Statement -:I : The B.P' s aldehydes and ketones are higher than those of ethers of comparable molecular masses. Statement -:II: Aldehydes and ketones undergo intermolecular association due to dipole -dipole interactions.

    A
    Both the statements are true and statement- II is the correct explanation of statement -I.
    B
    Both statements are true but statement -II is not the correct explanation of statement -I.
    C
    Statement-I is true but statement -II is falsae
    D
    Statement -I is false but statement- II is true

  • Fill in the blanks by suitable choices. The carbon atom in carbonyl group is _____ hybridised. The carbonyl group in aldehydes and ketone undergoes____. The carbonyl group in aldehydes and ketones undergoes ______ reactions. Aldehydes which have alpha -H atom undergo ______ reaction while aldehydes which have no alpha -H atom undergo ______ reaction.

    A
    `sp^(3)` nucleophilic substitutions, aldol condensation, Cannizzaro
    B
    sp, electrophilic substitution, Cannizzro, aldol condensation
    C
    `sp^(2)`, nucleophilic addition, aldol condensation, Cannizaro
    D
    `sp^(3)`, electrophilic addition, Cannizzaro, aldol condensation

  • Aldehyde and ketone undergo nucleophilic addition reaction because of polarity between gtC=O group . The reactivity of carbonyl groups toward nucleophile depends upon the nature of inductive effect of froup present at carbonyl carbon. Which among the following is more reactive towards nucleophilic addition reaction

    A
    `FCH_(2)CHO`
    B
    `ClCH_(2)CHO`
    C
    `Br CH_(2)CHO`
    D
    `I CH_(2)CHO`

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    Explore conceptually related problems

    Explain the following (a) it is necessary to control the pH during the reaction of aldehydes or ketons with ammonia derivations . (b ) Benzophene does not react with sodium bisulphite (c ) Acetaldehyde gives aldol condensation while formaldehyde does not . (d ) HCHO reacts with nHCN faster than CH_3 CHO (e ) Aldehydes and ketons undergoes nucleophilic addition reactions .

    Aldehyde and ketone undergo nucleophilic addition reaction because of polarity between gtC=O group . The reactivity of carbonyl groups toward nucleophile depends upon the nature of inductive effect of froup present at carbonyl carbon. Nucleophilic addition reaction over carbonyl compound is shown by :

    Aldehyde and ketone undergo nucleophilic addition reaction because of polarity between gtC=O group . The reactivity of carbonyl groups toward nucleophile depends upon the nature of inductive effect of froup present at carbonyl carbon. Which of the following is least reactive for nucleophilic addition reaction

    Aldehydes and ketone are

    Aldehydes and ketones are

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