Compound (X) C4H8O, which reacts with 2, 4-DNP derivative and gives negative haloform test is.
(a) CH3-CllO-CH2-CH3

(b) CH3-CHlCH3-CHO

(c) 

(d) CH3-CH2-CHlOH-CH3

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 67%
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Product (B) of the reaction is :

1. 

2. 

3. 

4. 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 66%
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Ph-CH=CH-C||O-CH3Ph-CH=CH-CO2H
Above conversion can be achieved by :

(a) KMnO4,  followed by H+

(b) I2/NaOH followed by H+

(c) H2/Pt

(d) LiAlH4

 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 68%
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Product (A) of the reaction is :

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 72%
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R-CllO-HR-NH2R-CH=N-R. This reaction gives best yield at:

(a) pH 1 - 2

(b) pH 4 - 5

(c) pH 10 - 11

(d) pH 13 - 14

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 62%
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An aromatic compound A of the molecular formula C8H10O on reaction with iodine and dilute NaOH gives a yellow precipitate. The structure of the compound is expected to be-

1. 

2. C6H5CHOHCH3

3. 

4.  

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 80%
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In the following sequence :

CH3CH2ClNaCN(i)Ni/H2(ii)acetic anhydride(iii), product (iii) is

(1) CH3CH2CH2NH2

(2) CH3CH2CH2CONHCH3

(3) CH3CH2CH2NHCOCH3

(4) CH3CH2CH2CONHCOCH3

Subtopic:  Acid Derivatives - Preparation, Properties & Uses |
 71%
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Carbonyl compounds can generally be converted to hydrocarbons by :

1. H2/Pt

2. LiAlH4

3. N2H4-KOH/

4. K2Cr2O7-H2SO4

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 69%
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Which statement about the aldol condensation is correct ?

(1) A Lewis acid is commonly used as a catalyst

(2) The initial step is probably the formation of a carbanion

(3) A Lewis base is employed to induce carbocation formation 

(4) The carbon chain is lengthened through the elimination of 1 mole of water

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 59%
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A compound gives a positive test with I2/NaOH and is extracted from benzene by saturated NaHSO3, It may be :

1. CH3CH24CHO

2. CH3CH23COCH3

3. CH3CH2COCH2CH3

4. CH3CH24CH2OH

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 82%
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NEET 2023 - Target Batch - Aryan Raj Singh