Methods of Preparation of Aldehydes and Ketones
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323810 Assertion :
Aldehydes and ketones are functional isomers of each other.
Reason :
A better yield of aldehydes can be prepared by the action of Grignard reagents on ethyl formate instead of ethyl orthoformate.

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.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323811 Two isomeric compounds ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' have the formula \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{Cl}_{2}\), with aq \(\mathrm{KOH}\) solution ' \(\mathrm{A}\) ' give propionaldehyde and ' \(\mathrm{B}\) ' gives acetone. Then ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' are:

1 \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3}-\mathrm{CHCl}-\mathrm{CH}_{2} \mathrm{Cl}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
3 \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
4 \({\text{C}}{{\text{H}}_3} - {\text{CHCl}} - {\text{C}}{{\text{H}}_2}{\text{Cl}}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323812 Which of the following on heating with aqueous \(\mathrm{KOH}\) produces acetaldehyde?

1 \(\mathrm{CH}_{3} \mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{COCl}\)
3 \(\mathrm{CH}_{2} \mathrm{ClCH}_{2} \mathrm{Cl}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323813 The calcium salt of final oxidation product of ethanol on dry distillation gives

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

323814 Consider the following reaction sequence,
supporting img
The correct statement regarding X is

1 It has an aldehyde functional group.
2 It has a ketone and an acid functional group.
3 It has a ketone functional group.
4 It has both aldehyde and ketone functional groups.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323810 Assertion :
Aldehydes and ketones are functional isomers of each other.
Reason :
A better yield of aldehydes can be prepared by the action of Grignard reagents on ethyl formate instead of ethyl orthoformate.

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.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323811 Two isomeric compounds ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' have the formula \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{Cl}_{2}\), with aq \(\mathrm{KOH}\) solution ' \(\mathrm{A}\) ' give propionaldehyde and ' \(\mathrm{B}\) ' gives acetone. Then ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' are:

1 \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3}-\mathrm{CHCl}-\mathrm{CH}_{2} \mathrm{Cl}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
3 \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
4 \({\text{C}}{{\text{H}}_3} - {\text{CHCl}} - {\text{C}}{{\text{H}}_2}{\text{Cl}}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323812 Which of the following on heating with aqueous \(\mathrm{KOH}\) produces acetaldehyde?

1 \(\mathrm{CH}_{3} \mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{COCl}\)
3 \(\mathrm{CH}_{2} \mathrm{ClCH}_{2} \mathrm{Cl}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323813 The calcium salt of final oxidation product of ethanol on dry distillation gives

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

323814 Consider the following reaction sequence,
supporting img
The correct statement regarding X is

1 It has an aldehyde functional group.
2 It has a ketone and an acid functional group.
3 It has a ketone functional group.
4 It has both aldehyde and ketone functional groups.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323810 Assertion :
Aldehydes and ketones are functional isomers of each other.
Reason :
A better yield of aldehydes can be prepared by the action of Grignard reagents on ethyl formate instead of ethyl orthoformate.

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.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323811 Two isomeric compounds ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' have the formula \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{Cl}_{2}\), with aq \(\mathrm{KOH}\) solution ' \(\mathrm{A}\) ' give propionaldehyde and ' \(\mathrm{B}\) ' gives acetone. Then ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' are:

1 \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3}-\mathrm{CHCl}-\mathrm{CH}_{2} \mathrm{Cl}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
3 \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
4 \({\text{C}}{{\text{H}}_3} - {\text{CHCl}} - {\text{C}}{{\text{H}}_2}{\text{Cl}}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323812 Which of the following on heating with aqueous \(\mathrm{KOH}\) produces acetaldehyde?

1 \(\mathrm{CH}_{3} \mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{COCl}\)
3 \(\mathrm{CH}_{2} \mathrm{ClCH}_{2} \mathrm{Cl}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323813 The calcium salt of final oxidation product of ethanol on dry distillation gives

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

323814 Consider the following reaction sequence,
supporting img
The correct statement regarding X is

1 It has an aldehyde functional group.
2 It has a ketone and an acid functional group.
3 It has a ketone functional group.
4 It has both aldehyde and ketone functional groups.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323810 Assertion :
Aldehydes and ketones are functional isomers of each other.
Reason :
A better yield of aldehydes can be prepared by the action of Grignard reagents on ethyl formate instead of ethyl orthoformate.

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.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323811 Two isomeric compounds ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' have the formula \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{Cl}_{2}\), with aq \(\mathrm{KOH}\) solution ' \(\mathrm{A}\) ' give propionaldehyde and ' \(\mathrm{B}\) ' gives acetone. Then ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' are:

1 \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3}-\mathrm{CHCl}-\mathrm{CH}_{2} \mathrm{Cl}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
3 \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
4 \({\text{C}}{{\text{H}}_3} - {\text{CHCl}} - {\text{C}}{{\text{H}}_2}{\text{Cl}}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323812 Which of the following on heating with aqueous \(\mathrm{KOH}\) produces acetaldehyde?

1 \(\mathrm{CH}_{3} \mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{COCl}\)
3 \(\mathrm{CH}_{2} \mathrm{ClCH}_{2} \mathrm{Cl}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323813 The calcium salt of final oxidation product of ethanol on dry distillation gives

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

323814 Consider the following reaction sequence,
supporting img
The correct statement regarding X is

1 It has an aldehyde functional group.
2 It has a ketone and an acid functional group.
3 It has a ketone functional group.
4 It has both aldehyde and ketone functional groups.
NEET DIGITAL LIBRARY
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323810 Assertion :
Aldehydes and ketones are functional isomers of each other.
Reason :
A better yield of aldehydes can be prepared by the action of Grignard reagents on ethyl formate instead of ethyl orthoformate.

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.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323811 Two isomeric compounds ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' have the formula \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{Cl}_{2}\), with aq \(\mathrm{KOH}\) solution ' \(\mathrm{A}\) ' give propionaldehyde and ' \(\mathrm{B}\) ' gives acetone. Then ' \(\mathrm{A}\) ' and ' \(\mathrm{B}\) ' are:

1 \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3}-\mathrm{CHCl}-\mathrm{CH}_{2} \mathrm{Cl}\) and \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\)
3 \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHCl}_{2}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
4 \({\text{C}}{{\text{H}}_3} - {\text{CHCl}} - {\text{C}}{{\text{H}}_2}{\text{Cl}}\) and \(\mathrm{CH}_{3}-\mathrm{CCl}_{2}-\mathrm{CH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323812 Which of the following on heating with aqueous \(\mathrm{KOH}\) produces acetaldehyde?

1 \(\mathrm{CH}_{3} \mathrm{CHCl}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{COCl}\)
3 \(\mathrm{CH}_{2} \mathrm{ClCH}_{2} \mathrm{Cl}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323813 The calcium salt of final oxidation product of ethanol on dry distillation gives

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

323814 Consider the following reaction sequence,
supporting img
The correct statement regarding X is

1 It has an aldehyde functional group.
2 It has a ketone and an acid functional group.
3 It has a ketone functional group.
4 It has both aldehyde and ketone functional groups.