NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323969
Assertion : Hydrogen bonding in carboxylic acid is stronger than alcohols. Reason : Highly branched carboxylic acids are more acidic than unbranched acids.
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:
Highly branched carboxylic acids exhibit reduced acidity compared to unbranched counterparts due to the electron donating \(+\mathrm{I}\) effect of alkyl groups. This diminishes the negative charge on the carboxylate ion and hinders effective solvation, resulting in weaker proton release and decreased acidity. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323970
Assertion : Formic acid usually exists as a dimer but hydrogen fluoride exists as a polymer. Reason : In case of \(\mathrm{HCOOH}\), intramolecular hydrogen bond is present, but in HF, intermolecular hydrogen bond is present.
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:
Formic acid's bent structure promotes cyclic dimer formation via intermolecular hydrogen bonding. On the other hand, the linear arrangement of \(\mathrm{HF}\) molecules facilitates extensive intermolecular hydrogen bonding, resulting in a polymer-like structure. So the option (3) iscorrect.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323971
Statement A : The molecular mass of acetic acid in benzene is 120 instead of 60 . Statement B : The Carboxylic acids exist as cyclic dimers in which the two strong hydrogen bonds in benzene solvent.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The molecular mass of acetic acid in benzene is 120 instead of 60 because the carboxylic acids exists as cyclic dimers in which two molecules of the acid are held together by two strong hydrogen bond.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323972
Assertion : Esters are hydrolysed with dilute mineral acids to give carboxylic acid. Reason : Boiling points of acids are lower than the corresponding alcohols.
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:
Carboxylic acids have elevated boiling points due to strong intermolecular forces, primarily hydrogen bonding, resulting from association between molecules in the liquid state, forming dimeric structures with two hydrogen bonds per molecule. So the option (3) is correct.
323969
Assertion : Hydrogen bonding in carboxylic acid is stronger than alcohols. Reason : Highly branched carboxylic acids are more acidic than unbranched acids.
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:
Highly branched carboxylic acids exhibit reduced acidity compared to unbranched counterparts due to the electron donating \(+\mathrm{I}\) effect of alkyl groups. This diminishes the negative charge on the carboxylate ion and hinders effective solvation, resulting in weaker proton release and decreased acidity. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323970
Assertion : Formic acid usually exists as a dimer but hydrogen fluoride exists as a polymer. Reason : In case of \(\mathrm{HCOOH}\), intramolecular hydrogen bond is present, but in HF, intermolecular hydrogen bond is present.
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:
Formic acid's bent structure promotes cyclic dimer formation via intermolecular hydrogen bonding. On the other hand, the linear arrangement of \(\mathrm{HF}\) molecules facilitates extensive intermolecular hydrogen bonding, resulting in a polymer-like structure. So the option (3) iscorrect.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323971
Statement A : The molecular mass of acetic acid in benzene is 120 instead of 60 . Statement B : The Carboxylic acids exist as cyclic dimers in which the two strong hydrogen bonds in benzene solvent.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The molecular mass of acetic acid in benzene is 120 instead of 60 because the carboxylic acids exists as cyclic dimers in which two molecules of the acid are held together by two strong hydrogen bond.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323972
Assertion : Esters are hydrolysed with dilute mineral acids to give carboxylic acid. Reason : Boiling points of acids are lower than the corresponding alcohols.
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:
Carboxylic acids have elevated boiling points due to strong intermolecular forces, primarily hydrogen bonding, resulting from association between molecules in the liquid state, forming dimeric structures with two hydrogen bonds per molecule. So the option (3) is correct.
323969
Assertion : Hydrogen bonding in carboxylic acid is stronger than alcohols. Reason : Highly branched carboxylic acids are more acidic than unbranched acids.
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:
Highly branched carboxylic acids exhibit reduced acidity compared to unbranched counterparts due to the electron donating \(+\mathrm{I}\) effect of alkyl groups. This diminishes the negative charge on the carboxylate ion and hinders effective solvation, resulting in weaker proton release and decreased acidity. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323970
Assertion : Formic acid usually exists as a dimer but hydrogen fluoride exists as a polymer. Reason : In case of \(\mathrm{HCOOH}\), intramolecular hydrogen bond is present, but in HF, intermolecular hydrogen bond is present.
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:
Formic acid's bent structure promotes cyclic dimer formation via intermolecular hydrogen bonding. On the other hand, the linear arrangement of \(\mathrm{HF}\) molecules facilitates extensive intermolecular hydrogen bonding, resulting in a polymer-like structure. So the option (3) iscorrect.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323971
Statement A : The molecular mass of acetic acid in benzene is 120 instead of 60 . Statement B : The Carboxylic acids exist as cyclic dimers in which the two strong hydrogen bonds in benzene solvent.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The molecular mass of acetic acid in benzene is 120 instead of 60 because the carboxylic acids exists as cyclic dimers in which two molecules of the acid are held together by two strong hydrogen bond.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323972
Assertion : Esters are hydrolysed with dilute mineral acids to give carboxylic acid. Reason : Boiling points of acids are lower than the corresponding alcohols.
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:
Carboxylic acids have elevated boiling points due to strong intermolecular forces, primarily hydrogen bonding, resulting from association between molecules in the liquid state, forming dimeric structures with two hydrogen bonds per molecule. So the option (3) is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323969
Assertion : Hydrogen bonding in carboxylic acid is stronger than alcohols. Reason : Highly branched carboxylic acids are more acidic than unbranched acids.
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:
Highly branched carboxylic acids exhibit reduced acidity compared to unbranched counterparts due to the electron donating \(+\mathrm{I}\) effect of alkyl groups. This diminishes the negative charge on the carboxylate ion and hinders effective solvation, resulting in weaker proton release and decreased acidity. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323970
Assertion : Formic acid usually exists as a dimer but hydrogen fluoride exists as a polymer. Reason : In case of \(\mathrm{HCOOH}\), intramolecular hydrogen bond is present, but in HF, intermolecular hydrogen bond is present.
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:
Formic acid's bent structure promotes cyclic dimer formation via intermolecular hydrogen bonding. On the other hand, the linear arrangement of \(\mathrm{HF}\) molecules facilitates extensive intermolecular hydrogen bonding, resulting in a polymer-like structure. So the option (3) iscorrect.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323971
Statement A : The molecular mass of acetic acid in benzene is 120 instead of 60 . Statement B : The Carboxylic acids exist as cyclic dimers in which the two strong hydrogen bonds in benzene solvent.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The molecular mass of acetic acid in benzene is 120 instead of 60 because the carboxylic acids exists as cyclic dimers in which two molecules of the acid are held together by two strong hydrogen bond.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323972
Assertion : Esters are hydrolysed with dilute mineral acids to give carboxylic acid. Reason : Boiling points of acids are lower than the corresponding alcohols.
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:
Carboxylic acids have elevated boiling points due to strong intermolecular forces, primarily hydrogen bonding, resulting from association between molecules in the liquid state, forming dimeric structures with two hydrogen bonds per molecule. So the option (3) is correct.
