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

323663 A substance C6H12O does not react with Fehling's solution but gives positive reactions for a carbonyl group. It also gives positive iodoform reaction. Which of the following structure will best correspond to the above statements?

1 CH3CH2CH(CH3)COCH3
2 CH3CH2COCH2CH2CH3
3 CH3CH2COCH(CH3)2
4 CH3CH2CH(CH3)CH2CHO
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323664 In the reduction of acetaldehyde using LiAlH4 the hydride ion acts as

1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323665 Assertion :
Aldehydes and ketones, both react with Tollen's reagent to form silver mirror.
Reason :
Both, aldehydes and ketones contain a carbonyl group.

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

323666 Which of the following reagent is used to identify carbonyl group from other functional groups?

1 Schiff's reagent
2 Fehling solution
3 2, 4-dinitro phenyl hydrazine
4 Tollen's reagent
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323663 A substance C6H12O does not react with Fehling's solution but gives positive reactions for a carbonyl group. It also gives positive iodoform reaction. Which of the following structure will best correspond to the above statements?

1 CH3CH2CH(CH3)COCH3
2 CH3CH2COCH2CH2CH3
3 CH3CH2COCH(CH3)2
4 CH3CH2CH(CH3)CH2CHO
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323664 In the reduction of acetaldehyde using LiAlH4 the hydride ion acts as

1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323665 Assertion :
Aldehydes and ketones, both react with Tollen's reagent to form silver mirror.
Reason :
Both, aldehydes and ketones contain a carbonyl group.

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

323666 Which of the following reagent is used to identify carbonyl group from other functional groups?

1 Schiff's reagent
2 Fehling solution
3 2, 4-dinitro phenyl hydrazine
4 Tollen's reagent
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323663 A substance C6H12O does not react with Fehling's solution but gives positive reactions for a carbonyl group. It also gives positive iodoform reaction. Which of the following structure will best correspond to the above statements?

1 CH3CH2CH(CH3)COCH3
2 CH3CH2COCH2CH2CH3
3 CH3CH2COCH(CH3)2
4 CH3CH2CH(CH3)CH2CHO
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323664 In the reduction of acetaldehyde using LiAlH4 the hydride ion acts as

1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323665 Assertion :
Aldehydes and ketones, both react with Tollen's reagent to form silver mirror.
Reason :
Both, aldehydes and ketones contain a carbonyl group.

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

323666 Which of the following reagent is used to identify carbonyl group from other functional groups?

1 Schiff's reagent
2 Fehling solution
3 2, 4-dinitro phenyl hydrazine
4 Tollen's reagent
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323663 A substance C6H12O does not react with Fehling's solution but gives positive reactions for a carbonyl group. It also gives positive iodoform reaction. Which of the following structure will best correspond to the above statements?

1 CH3CH2CH(CH3)COCH3
2 CH3CH2COCH2CH2CH3
3 CH3CH2COCH(CH3)2
4 CH3CH2CH(CH3)CH2CHO
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323664 In the reduction of acetaldehyde using LiAlH4 the hydride ion acts as

1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323665 Assertion :
Aldehydes and ketones, both react with Tollen's reagent to form silver mirror.
Reason :
Both, aldehydes and ketones contain a carbonyl group.

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

323666 Which of the following reagent is used to identify carbonyl group from other functional groups?

1 Schiff's reagent
2 Fehling solution
3 2, 4-dinitro phenyl hydrazine
4 Tollen's reagent