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An organic compound A on reduction gives compound B which on reaction with chloroform and potassium hydroxide forms C. The compound C on catalytic reduction gives N-methylaniline. The compound A is                                                                                            

(a) nitrobenzene

(b) nitromethane

(c) methylamine

(d) aniline

Concept Videos :-

#17 | Nitrogen containing Compounds: III
#18 | Nitrogen containing Compounds: IV
#19 | Nitrogen containing Compounds: V

Concept Questions :-

Nitro Compound

(a)

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Acetamide and ethyl amine can be distinguished by reacting with             

(a) aq. HCl and heat

(b) aq. NaOH and heat

(c) acidified KMnO4

(d) bromine water

Concept Videos :-

#1 | Preparation of Amines: I
#2 | Preparation of Amines: II
#3 | Properties of Amines: I
#4 | Properties of Amines: II

Concept Questions :-

Amines - Introduction,preparation and properties

(b) When acetamide is heated with aq. NaOH it forms NH3 gas but ethylamine cannot form NH3.

 CH3CONH2 + H2ONaOHCH3COONa + NH3

CH3CH2NH2 + H2NaOHNo reaction

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Which of the following compound gives dye test

(1) Aniline                (2) Methylamine                  (3) Diphenylamine                  (4)Ethylamine

 

Concept Videos :-

#5 | Compounds containing Nitrogen: I
#6 | Compounds containing Nitrogen: II

Concept Questions :-

Diazonium salts: Preparation, reactions, uses

(1) Basically, all Azo dyes are derivatives of aniline.

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CH3CH2ClNaCNXNi/H2YAcetic anhydrideZ

In the above reaction sequence, Z is                                  

(a) CH3CH2CH2NHCOCH3

(b) CH3CH2CH2NH2

(c) CH3CH2CH2CONHCH3

(d) CH3CH2CH2CONHCOCH3

Concept Videos :-

Concept Questions :-

Cyanides and Isocyanides

(a) CH3CH2Cl NaCNCH3-CH2-CNNi/H2CH3-CH2CH2NH2Acetic anhydrideCH3-CH2-CH2-NHCOCH3

                                     X                             Y                                            Z

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In the reaction, 

CH3CN +2H SnCl2HClXBoiling H2O  Y ,

the term Y is

(a) acetone

(b) ethanamine

(c) acetaldehyde

(d) dimethyl amine

Concept Videos :-

Concept Questions :-

Cyanides and Isocyanides

(c) CH3CN  +2H SnCl2HClCH3-CH=NHBoilH2OCH3-CH=O

                                            X                               Y

                                        Imide                        Acetaldehyde

So, Y is acetaldehyde.

Image result for HCl and SnCl2

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Predict the product,                               

 

Concept Videos :-

#1 | Preparation of Amines: I
#2 | Preparation of Amines: II
#3 | Properties of Amines: I
#4 | Properties of Amines: II

Concept Questions :-

Amines - Introduction,preparation and properties

(a) Both aliphatic and aromatic secondary amines react with NaNO2 + HCl(HNO2) to form N-nitrosoamines which are insoluble in dilute mineral acids and separate out as neutral yellow oily compounds.

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Aniline in a set of reactions yielded a product                                                   

The structure of the product D would be

(a) C6H5CH2NH2

(b)C6H5NHCH2CH3

(c)C6H5NHOH

(d)C6H5CH2OH

Concept Videos :-

#5 | Compounds containing Nitrogen: I
#6 | Compounds containing Nitrogen: II

Concept Questions :-

Diazonium salts: Preparation, reactions, uses

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Intermediates formed during the reaction of RCONH2 with Br2 and KOH are                                

(a) RCONHBr and RNCO

(b) RNHCOBr and RNCO

(c) RNHBr and RCONHBr

(d) RCONBr2

Concept Videos :-

#1 | Preparation of Amines: I
#2 | Preparation of Amines: II
#3 | Properties of Amines: I
#4 | Properties of Amines: II

Concept Questions :-

Amines - Introduction,preparation and properties

(a)  The reaction, RCONH2 + Br2 + KOH RNH2

 is known as Hofmann bromamide reaction. The mechanism of this is given as:

 

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In a reaction of aniline a colored product C was obtained.

Concept Videos :-

#5 | Compounds containing Nitrogen: I
#6 | Compounds containing Nitrogen: II

Concept Questions :-

Diazonium salts: Preparation, reactions, uses

(d)

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Which one of the following on reduction with LiAlH4 yields a secondary amine?                   [2007]

(a) Methyl isocyanide

(b) Acetamide

(c) Methyl cyanide

(d) Nitroethane

Concept Videos :-

Concept Questions :-

Cyanides and Isocyanides

(a) CH3-NC + 4[H] LiAlH4CH3NHCH3

                                         Dimethylamine

On catalytic reduction or with lithium aluminium hydride (LiAlH4) or with nascent hydrogen, alkyl isocyanide yield 2° amine whereas cyanide gives 1° amine on reduction.

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