Chemical Reactions of Aldehydes and Ketones
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323457 Aldol condensation will not be observed in

1 Phenyl acetaldehyde
2 Hexanal
3 Trimethyl acetaldehyde
4 Ethanal
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323458 Among the following pair, the one that on aldol condensation followed by dehydration gives methyl vinyl ketone is

1 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
2 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
3 \(\mathrm{CH}_{3} \mathrm{CHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
4 \(\mathrm{CH}_{3} \mathrm{COCH}_{3}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323459 Which of the following has the most acidic hydrogen?

1 3-Hexanone
2 2, 4-Hexanedione
3 2, 5-Hexanedione
4 2, 3-Hexanedione
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323460 Assertion :
The \(\alpha\)-hydrogen atom in carbonyl compounds is less acidic.
Reason :
The anion formed after the loss of \(\alpha\)-hydrogen atom is resonance stabilised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323457 Aldol condensation will not be observed in

1 Phenyl acetaldehyde
2 Hexanal
3 Trimethyl acetaldehyde
4 Ethanal
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323458 Among the following pair, the one that on aldol condensation followed by dehydration gives methyl vinyl ketone is

1 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
2 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
3 \(\mathrm{CH}_{3} \mathrm{CHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
4 \(\mathrm{CH}_{3} \mathrm{COCH}_{3}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323459 Which of the following has the most acidic hydrogen?

1 3-Hexanone
2 2, 4-Hexanedione
3 2, 5-Hexanedione
4 2, 3-Hexanedione
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323460 Assertion :
The \(\alpha\)-hydrogen atom in carbonyl compounds is less acidic.
Reason :
The anion formed after the loss of \(\alpha\)-hydrogen atom is resonance stabilised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323457 Aldol condensation will not be observed in

1 Phenyl acetaldehyde
2 Hexanal
3 Trimethyl acetaldehyde
4 Ethanal
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323458 Among the following pair, the one that on aldol condensation followed by dehydration gives methyl vinyl ketone is

1 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
2 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
3 \(\mathrm{CH}_{3} \mathrm{CHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
4 \(\mathrm{CH}_{3} \mathrm{COCH}_{3}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323459 Which of the following has the most acidic hydrogen?

1 3-Hexanone
2 2, 4-Hexanedione
3 2, 5-Hexanedione
4 2, 3-Hexanedione
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323460 Assertion :
The \(\alpha\)-hydrogen atom in carbonyl compounds is less acidic.
Reason :
The anion formed after the loss of \(\alpha\)-hydrogen atom is resonance stabilised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
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NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323457 Aldol condensation will not be observed in

1 Phenyl acetaldehyde
2 Hexanal
3 Trimethyl acetaldehyde
4 Ethanal
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323458 Among the following pair, the one that on aldol condensation followed by dehydration gives methyl vinyl ketone is

1 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
2 \(\mathrm{HCHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
3 \(\mathrm{CH}_{3} \mathrm{CHO}+\mathrm{CH}_{3} \mathrm{CHO}\)
4 \(\mathrm{CH}_{3} \mathrm{COCH}_{3}+\mathrm{CH}_{3} \mathrm{COCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323459 Which of the following has the most acidic hydrogen?

1 3-Hexanone
2 2, 4-Hexanedione
3 2, 5-Hexanedione
4 2, 3-Hexanedione
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323460 Assertion :
The \(\alpha\)-hydrogen atom in carbonyl compounds is less acidic.
Reason :
The anion formed after the loss of \(\alpha\)-hydrogen atom is resonance stabilised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
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