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

 

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Product (A) of the reaction is :

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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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

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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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 :

(b) C6H5CHOHCH3

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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In the following sequence :

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

(a) CH3CH2CH2NH2

(b) CH3CH2CH2CONHCH3

(c) CH3CH2CH2NHCOCH3

(d) CH3CH2CH2CONHCOCH3

Concept Questions :-

Acid Derivatives, Preparation and Properties
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Carbonyl compounds can generally be converted to hydrocarbons by :

(a) H2/Pt

(b) LiAlH4

(c) N2H4-KOH/

(d) K2Cr2O7-H2SO4

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Which statement about the aldol condensation is correct ?

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

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

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

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

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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A compound gives a positive test with I2/NaOH and is extracted from benzene by saturated NaHSO3, It may be :

(a) CH3CH24CHO

(b) CH3CH23COCH3

(c) CH3CH2COCH2CH3

(d) CH3CH24CH2OH

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Reactant (A) and (B) is:

(a) Ph-CH2-CH=O + NH2-OH

(b) Ph-CH=O + NH2-OH

(c) Ph-CllO-CH3 + NH2-NH2

(d) Ph-CllO-CH3 + NH2-OH

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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CH3-CllO-OHCaOH2(A)

Product (A) is :

 

 

Concept Questions :-

Carboxylic Acids
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