323663
A substance 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
2
3
4
Explanation:
Carbonyl groups does not give Fehling's solution conforms the molecule contains ketone. Ketones having group give iodoform test. Hence, option (1) is correct structure.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323664
In the reduction of acetaldehyde using the hydride ion acts as
1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
Explanation:
(hydride ion)acts as a nucleophile.
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.
Explanation:
Aldehydes gives +ve Tollen's test but not ketones.
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
Explanation:
Test to identify the carbonyl compounds is 2, 4 - DNP test.
323663
A substance 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
2
3
4
Explanation:
Carbonyl groups does not give Fehling's solution conforms the molecule contains ketone. Ketones having group give iodoform test. Hence, option (1) is correct structure.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323664
In the reduction of acetaldehyde using the hydride ion acts as
1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
Explanation:
(hydride ion)acts as a nucleophile.
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.
Explanation:
Aldehydes gives +ve Tollen's test but not ketones.
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
Explanation:
Test to identify the carbonyl compounds is 2, 4 - DNP test.
323663
A substance 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
2
3
4
Explanation:
Carbonyl groups does not give Fehling's solution conforms the molecule contains ketone. Ketones having group give iodoform test. Hence, option (1) is correct structure.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323664
In the reduction of acetaldehyde using the hydride ion acts as
1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
Explanation:
(hydride ion)acts as a nucleophile.
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.
Explanation:
Aldehydes gives +ve Tollen's test but not ketones.
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
Explanation:
Test to identify the carbonyl compounds is 2, 4 - DNP test.
323663
A substance 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
2
3
4
Explanation:
Carbonyl groups does not give Fehling's solution conforms the molecule contains ketone. Ketones having group give iodoform test. Hence, option (1) is correct structure.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323664
In the reduction of acetaldehyde using the hydride ion acts as
1 an electrophile
2 a nucleophile
3 both (1) and (2)
4 a free radical.
Explanation:
(hydride ion)acts as a nucleophile.
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.
Explanation:
Aldehydes gives +ve Tollen's test but not ketones.
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
Explanation:
Test to identify the carbonyl compounds is 2, 4 - DNP test.