Muscone (an explosive perfume secreted by musk deer) has the structure

Structural formula of muscone

 . Its IUPAC name is:

(a) 3-methyl cyclopentadecanone

(b) methyl cyclopentadecan-3-one

(c) 3-methyl cyclotetradecanone

(d) 3-methyl cyclohexadecan-3-one

 

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Which of the following has most acidic hydrogen?

1. 3-hexanone                         

2. 2,4-hexanedione

3. 2,5-hexanedione                   

4. 2,3-hexanedione

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Which can be reduced to corresponding hydrocarbon by Zn/HCl?

(a) Butan-2-one                          (b) Acetic acid

(c) Acetamide                              (d) Ethyl acetate

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Nucleophilic addition reaction will be most favoured in                   [2006]

(a)                         O                        CH3-CH2-CH2C-CH3

(b) (CH3)2C=O

(c) CH3CH2CHO

(d) CH3CHO

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The enolic form of acetone contains:

(a) 9 σ-bonds, 1π-bond and 2 lone pairs

(b) 8 σ-bonds, 2π-bonds and 2 lone pairs

(c) 10 σ-bonds, 1π-bond and 1 lone pair

(d) 9 σ-bonds, 2π-bonds and 1 lone pair

 

 

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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In this reaction,

CH3CHO + HCN CH3CH(OH)CN H.OHCH3CH(OH)COOH

an asymmetric compound is generated. The acid obtained would be            

1. 50% D + 50% L-isomer

2. 20% D + 80% L-isomer

3. D-isomer

4. L-isomer

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Ethane can be obtained from ethanal in one step by:

(a) Na-Hg + water

(b) Zn-Hg + conc.HCl

(c) aluminium isopropoxide and isopropyl alcohol

(d) LiAlH4 + ether

 

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Which one of the following compounds on treatment with LiAlH4 will give a product that will give a positive iodoform test?

1. CH3CH2CHO                             

2. CH3CH2COOCH3

3. CH3CH2OCH2CH                     

4. CH3COCH3

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Aldehydes and ketones will not form crystalline derivatives with                   

1. sodium bisulphite

2. phenyl hydrazine

3. semicarbazide hydrochloride

4. dihydrogen sodium phosphate

Concept Questions :-

Preparation & properties of Aldehydes and Ketones
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Oxalic acid on treatment with conc. H2SO4 gives:

1. CO + H2O2                           

2.  H2O +CO+CO2

3. HCOOH + CO2                       

4.  HCOOH + CO2 +O2

Concept Questions :-

Carboxylic Acids
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