323939
Aldehydes and ketones have lower boiling points than the corresponding alcohols because
1 They possess weak dipole-dipole interactions
2 They have weak van der Waal's forces
3 They cannot form intermolecular hydrogen bonds
4 All of these
Explanation:
All the given statements are correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323940
Assertion : Carbonyl compounds do not show intermolecular hydrogen bonding. Reason : Boiling points of carbonyl compounds are lower than alkanes.
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:
Higher boiling points of carbonyl compounds (aldehydes, ketones) compared to corresponding alkanes arise from stronger dipole-dipole interactions between polar carbonyl groups, surpassing London dispersion forces in non-polar molecules, necessitating more energy for vaporization. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323942
Which of the following statements regarding aldehydes is not correct?
1 The carbonyl functional group is planar
2 The boiling points of aldehydes is greater than those of alkanes of comparable molar masses
3 The boiling points of aldehydes is greater than those of alcohols of comparable molar masses.
4 Formaldehyde is gas at room temperature
Explanation:
Alcohols have higher B.P than carbonyl compounds due to \(\mathrm{H}\)-bonding
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323943
Boiling points of carbonyl compounds are higher than those of alkane due to
1 Hydrogen bonding
2 Dipole-dipole interaction
3 van der Waal's forces
4 All of these
Explanation:
Carbonyl compounds are polar in nature hence, possess dipole-dipole interactions which are stronger than van der Waal's interaction exist between alkanes.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323939
Aldehydes and ketones have lower boiling points than the corresponding alcohols because
1 They possess weak dipole-dipole interactions
2 They have weak van der Waal's forces
3 They cannot form intermolecular hydrogen bonds
4 All of these
Explanation:
All the given statements are correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323940
Assertion : Carbonyl compounds do not show intermolecular hydrogen bonding. Reason : Boiling points of carbonyl compounds are lower than alkanes.
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:
Higher boiling points of carbonyl compounds (aldehydes, ketones) compared to corresponding alkanes arise from stronger dipole-dipole interactions between polar carbonyl groups, surpassing London dispersion forces in non-polar molecules, necessitating more energy for vaporization. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323942
Which of the following statements regarding aldehydes is not correct?
1 The carbonyl functional group is planar
2 The boiling points of aldehydes is greater than those of alkanes of comparable molar masses
3 The boiling points of aldehydes is greater than those of alcohols of comparable molar masses.
4 Formaldehyde is gas at room temperature
Explanation:
Alcohols have higher B.P than carbonyl compounds due to \(\mathrm{H}\)-bonding
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323943
Boiling points of carbonyl compounds are higher than those of alkane due to
1 Hydrogen bonding
2 Dipole-dipole interaction
3 van der Waal's forces
4 All of these
Explanation:
Carbonyl compounds are polar in nature hence, possess dipole-dipole interactions which are stronger than van der Waal's interaction exist between alkanes.
323939
Aldehydes and ketones have lower boiling points than the corresponding alcohols because
1 They possess weak dipole-dipole interactions
2 They have weak van der Waal's forces
3 They cannot form intermolecular hydrogen bonds
4 All of these
Explanation:
All the given statements are correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323940
Assertion : Carbonyl compounds do not show intermolecular hydrogen bonding. Reason : Boiling points of carbonyl compounds are lower than alkanes.
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:
Higher boiling points of carbonyl compounds (aldehydes, ketones) compared to corresponding alkanes arise from stronger dipole-dipole interactions between polar carbonyl groups, surpassing London dispersion forces in non-polar molecules, necessitating more energy for vaporization. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323942
Which of the following statements regarding aldehydes is not correct?
1 The carbonyl functional group is planar
2 The boiling points of aldehydes is greater than those of alkanes of comparable molar masses
3 The boiling points of aldehydes is greater than those of alcohols of comparable molar masses.
4 Formaldehyde is gas at room temperature
Explanation:
Alcohols have higher B.P than carbonyl compounds due to \(\mathrm{H}\)-bonding
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323943
Boiling points of carbonyl compounds are higher than those of alkane due to
1 Hydrogen bonding
2 Dipole-dipole interaction
3 van der Waal's forces
4 All of these
Explanation:
Carbonyl compounds are polar in nature hence, possess dipole-dipole interactions which are stronger than van der Waal's interaction exist between alkanes.
323939
Aldehydes and ketones have lower boiling points than the corresponding alcohols because
1 They possess weak dipole-dipole interactions
2 They have weak van der Waal's forces
3 They cannot form intermolecular hydrogen bonds
4 All of these
Explanation:
All the given statements are correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323940
Assertion : Carbonyl compounds do not show intermolecular hydrogen bonding. Reason : Boiling points of carbonyl compounds are lower than alkanes.
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:
Higher boiling points of carbonyl compounds (aldehydes, ketones) compared to corresponding alkanes arise from stronger dipole-dipole interactions between polar carbonyl groups, surpassing London dispersion forces in non-polar molecules, necessitating more energy for vaporization. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323942
Which of the following statements regarding aldehydes is not correct?
1 The carbonyl functional group is planar
2 The boiling points of aldehydes is greater than those of alkanes of comparable molar masses
3 The boiling points of aldehydes is greater than those of alcohols of comparable molar masses.
4 Formaldehyde is gas at room temperature
Explanation:
Alcohols have higher B.P than carbonyl compounds due to \(\mathrm{H}\)-bonding
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323943
Boiling points of carbonyl compounds are higher than those of alkane due to
1 Hydrogen bonding
2 Dipole-dipole interaction
3 van der Waal's forces
4 All of these
Explanation:
Carbonyl compounds are polar in nature hence, possess dipole-dipole interactions which are stronger than van der Waal's interaction exist between alkanes.