323504
Assertion : \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCOC}\left(\mathrm{CH}_{3}\right)_{3}\) and acetone can be distinguished by the reaction with \(\mathrm{NaHSO}_{3}\). Reason : \(\mathrm{HSO}_{3}^{-}\)is the nucleophile in bisulphite addition.
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.
Explanation:
The bulky bisulfite ion is hindered in nucleophilic addition reactions with sterically hindered ketones due to its size and steric hindrance, limiting its accessibility to the carbonyl carbon and impacting reaction efficiency and selectivity. So the option (2) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323505
Which of the following reagents responds differently with \(\mathrm{HCHO}, \mathrm{CH}_{3} \mathrm{CHO}\) and \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) ?
1 \(\mathrm{HCN}\)
2 \(\mathrm{NH}_{2}-\mathrm{NH}_{2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{NH}_{2} \mathrm{OH}\)
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323506
Compounds \(\mathrm{P}\) and \(\mathrm{R}\) in the following reaction are
1 Metamers
2 Identical compounds
3 Positional isomers
4 Functional isomers
Explanation:
P and R are positional isomers.
KCET - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323507
Assertion : Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason : Hydrazones of aldehydes and ketones are not prepared in highly acidic medium.
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.
Explanation:
In highly acidic conditions, protonation of hydrazine reduces its nucleophilic character by engaging lone pairs in bonding with protons, limiting accessibility for nucleophilic attacks in chemical reactions. So the option (3) is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323504
Assertion : \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCOC}\left(\mathrm{CH}_{3}\right)_{3}\) and acetone can be distinguished by the reaction with \(\mathrm{NaHSO}_{3}\). Reason : \(\mathrm{HSO}_{3}^{-}\)is the nucleophile in bisulphite addition.
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.
Explanation:
The bulky bisulfite ion is hindered in nucleophilic addition reactions with sterically hindered ketones due to its size and steric hindrance, limiting its accessibility to the carbonyl carbon and impacting reaction efficiency and selectivity. So the option (2) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323505
Which of the following reagents responds differently with \(\mathrm{HCHO}, \mathrm{CH}_{3} \mathrm{CHO}\) and \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) ?
1 \(\mathrm{HCN}\)
2 \(\mathrm{NH}_{2}-\mathrm{NH}_{2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{NH}_{2} \mathrm{OH}\)
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323506
Compounds \(\mathrm{P}\) and \(\mathrm{R}\) in the following reaction are
1 Metamers
2 Identical compounds
3 Positional isomers
4 Functional isomers
Explanation:
P and R are positional isomers.
KCET - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323507
Assertion : Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason : Hydrazones of aldehydes and ketones are not prepared in highly acidic medium.
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.
Explanation:
In highly acidic conditions, protonation of hydrazine reduces its nucleophilic character by engaging lone pairs in bonding with protons, limiting accessibility for nucleophilic attacks in chemical reactions. So the option (3) is correct.
323504
Assertion : \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCOC}\left(\mathrm{CH}_{3}\right)_{3}\) and acetone can be distinguished by the reaction with \(\mathrm{NaHSO}_{3}\). Reason : \(\mathrm{HSO}_{3}^{-}\)is the nucleophile in bisulphite addition.
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.
Explanation:
The bulky bisulfite ion is hindered in nucleophilic addition reactions with sterically hindered ketones due to its size and steric hindrance, limiting its accessibility to the carbonyl carbon and impacting reaction efficiency and selectivity. So the option (2) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323505
Which of the following reagents responds differently with \(\mathrm{HCHO}, \mathrm{CH}_{3} \mathrm{CHO}\) and \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) ?
1 \(\mathrm{HCN}\)
2 \(\mathrm{NH}_{2}-\mathrm{NH}_{2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{NH}_{2} \mathrm{OH}\)
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323506
Compounds \(\mathrm{P}\) and \(\mathrm{R}\) in the following reaction are
1 Metamers
2 Identical compounds
3 Positional isomers
4 Functional isomers
Explanation:
P and R are positional isomers.
KCET - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323507
Assertion : Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason : Hydrazones of aldehydes and ketones are not prepared in highly acidic medium.
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.
Explanation:
In highly acidic conditions, protonation of hydrazine reduces its nucleophilic character by engaging lone pairs in bonding with protons, limiting accessibility for nucleophilic attacks in chemical reactions. So the option (3) is correct.
323504
Assertion : \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCOC}\left(\mathrm{CH}_{3}\right)_{3}\) and acetone can be distinguished by the reaction with \(\mathrm{NaHSO}_{3}\). Reason : \(\mathrm{HSO}_{3}^{-}\)is the nucleophile in bisulphite addition.
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.
Explanation:
The bulky bisulfite ion is hindered in nucleophilic addition reactions with sterically hindered ketones due to its size and steric hindrance, limiting its accessibility to the carbonyl carbon and impacting reaction efficiency and selectivity. So the option (2) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323505
Which of the following reagents responds differently with \(\mathrm{HCHO}, \mathrm{CH}_{3} \mathrm{CHO}\) and \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) ?
1 \(\mathrm{HCN}\)
2 \(\mathrm{NH}_{2}-\mathrm{NH}_{2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{NH}_{2} \mathrm{OH}\)
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323506
Compounds \(\mathrm{P}\) and \(\mathrm{R}\) in the following reaction are
1 Metamers
2 Identical compounds
3 Positional isomers
4 Functional isomers
Explanation:
P and R are positional isomers.
KCET - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323507
Assertion : Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason : Hydrazones of aldehydes and ketones are not prepared in highly acidic medium.
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.
Explanation:
In highly acidic conditions, protonation of hydrazine reduces its nucleophilic character by engaging lone pairs in bonding with protons, limiting accessibility for nucleophilic attacks in chemical reactions. So the option (3) is correct.
