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CBSE Questions for Class 12 Medical Chemistry Organic Compounds Containing Nitrogen Quiz 8 - MCQExams.com

C2H5NH2 is neutral to litmus.
  • True
  • False
Amines are Lewis acids.
  • True
  • False
Amides are the oxidation products of nitriles (cyanides).
  • True
  • False
Mark the correct statement:
  • methylamine is slightly acidic
  • methylamine is less basic than ammonia
  • methylamine is more basic than ammonia
  • methylamine forms salts with alkalies
Primary amines are less soluble than tertiary amines.
  • True
  • False
Which of the following is the least basic amine?
  • Methylamine
  • Ethylamine
  • Diethylamine
  • Aniline
  • Benzylamine
CH3CH2NH2 contains a basic NH2 group, but CH3CONH2 does not because:
  • in CH3CONH2, the lone pair of electron on N-atom is delocalised due to resonance
  • CH3CONH2 is amphoteric in nature
  • in CH3CH2NH2, the lone pair of electrons on N-atom is delocalised due to resonance
  • CH3CONH2 is an acidic derivative
Comparing basic strength of NH3, CH3NH2 and C6H5NH2, it may be concluded that:
  • basic strength remains unaffected
  • basic strength of NH3 is highest
  • basic strength of alkylamine is lowest
  • basic strength of arylamine is lowest
Which one of the following on reduction with LiAlH4 yields a secondary amine?
  • Methyl cyanide
  • Nitroethane
  • Methyl isocyanide
  • Acetamide
Reduction of alkyl nitrile produces:
  • secondary amine
  • primary amine
  • tertiary amine
  • amide
An isonitrile on reduction gives:
  • 3oamine
  • 2oamine
  • 1oamine
  • quaternary ammonium salts
Potassium phthalimide reacts with 'A' which on hydrolysis gives isopentylamine, whiat is 'A'?
Which on reduction does not give primary amine?
  • CH3CN
  • C2H5NC
  • CH3CONH2
  • All of these
The basicity of compounds I, II, III and IV varies in the order:
CH3NH2I, (CH3)2NHII, (CH3)3NIII, C6H5CH2NH2IV 
  • I>II>III>IV
  • II>I>III>IV
  • III>I>II>IV
  • IV>I>II>III
Ethyl isocyanide on reduction with sodium and alcohol gives:
  • ethylamine
  • propylamine
  • dimethylamine
  • ethyl methylamine
State, whether the following statements are True or False:
Aniline forms phenol when treated with nitrous acid.
  • True
  • False
Ethyl nitrite on reduction with Sn/HCI gives:
  • C2H5NH2+HNO2
  • C2H5NH2+H2O
  • C2H5OH+NH4OH
  • C2H5OH+NaNO2
Among the following, the strongest base is
  • C6H5NH2
  • pNO2C6H4NH2
  • pCH2C6H4NH2
  • C6H5CH2NH2
Which of the following is least basic?
  • Aniline
  • pMethylaniline
  • Diphenylamine
  • Triphenylamine
The correct order of basicities of the following compounds is 
1764011_d5a2d456103e43bbb95b84536cfe3606.PNG
  • 2>1>3>4
  • 1>3>2>4
  • 3>1>2>4
  • 1>2>3>4
Which of the following compound is the strongest base?
  • Ammonia
  • Aniline
  • Methylamine
  • N-methyl aniline
The order of basic strength among the following amines in benzene solution is 
  • CH3NH2>(CH3)3N>(CH3)2NH
  • (CH3)2NH>CH3NH2>(CH3)3N
  • CH3NH2>(CH3)2NH>(CH3)3N
  • (CH3)3N>CH3NH2>(CH3)2NH
Order of basicity of ethyl amines in aqueous medium is 
  • Secondry>primary>Tertiary
  • primary>Secondry>Tertiary
  • Secondry>Tertiary>primary
  • Tertiary>primary>Secondry
An orange dye p-hydroxy azobenzene can be synthesized from benzene diazonium chloride by
  • Sandmeyer reaction
  • Gomberg reaction
  • Coupling reaction
  • Gattermann reaction
  • Etard reaction
Which of the following is 10 amine
  • Ethylene diamine
  • Dimethyl amine
  • Trimethyl amine
  • N-methyl aniline
The basicity order of I,II and III is
1748593_e0c83ff4f202420391723f0fb81890b6.PNG
  • III>I>II
  • I>II>III
  • III>II>I
  • II>III>I
Consider the following compounds, What is the correct order of basicity of the above compounds?
1726649_163ce48fa5f4491e83f1c161dc83097a.jpg
  • I>II>IIl
  • III>I>II
  • III>II>I
  • I>III>II
Compounds containing both amino and COOH groups are known as
  • Diamines
  • unknown
  • Amino acids
  • Enzymes
Correct the order of increasing basicity is 
  • NH3<C6H5NH2<(C2H5)2NH<C2H5NH2<(C2H5)3N
  • C6H5NH2<NH3<(C2H5)3N<(C2H5)2NH<C2H5NH2
  • C6H5NH2<NH3<C2H5NH2<(C2H5)3N<(C2H5)2NH
  • C6H5NH2<(C2H5)3N<NH3<C2H5NH2<(C2H5)2NH
By the presence of a halogen atom in the ring, basic properties of aniline is 
  • Increased
  • Decreased
  • unchanged
  • Doubled
Gabriel's phthalimide synthesis is used for the preperation of 
  • primary aromatic amine
  • Secondary acid
  • Primary aliphatic amine
  • Tertiary amine
The decreasing order of the  basic character of the three amines and ammonia is 
  • NH3>CH3NH2>C2H5NH2>C6H5NH2
  • C2H5NH2>CH3NH2>NH3>C6H5NH2
  • C6H5NH2>C2H5NH2>CH3NH2>NH3
  • CH3NH2>C2H5NH2>C6H5NH2>NH3
Among the following compounds nitrobenzene , benzene, aniline and phenol, the strongest basic behaviuor  in acid medium is exhibited by :
  • Phenol
  • Aniline
  • Nitrobenzene
  • Benzene
The strongest base among the following is 
Among the following the weakest base is 
  • C6H5CH2NH2
  • C6H5CH2NHCH3
  • O2NCH2NH2
  • CH3NHCHO
Arrange the following in increasing order of basicity 
CH3NH2,(CH3)2NH,C6H5NH2,(CH3)3N
  • (CH3)3N<(CH3)2NH<CH3NH2<C6H5NH2
  • (CH3)3N>(CH3)2NH>CH3NH2>C6H5NH2
  • C6H5NH2<(CH3)3N<CH3NH2<(CH3)2NH
  • C6H5NH2>(CH3)3N>CH3NH2>(CH3)2NH
Decreasing order of basicity is 
(1) CH3CONH2
(2)CH3CH2NH2
(3) PhCH2CONH2
  • 1>2>3
  • 2>1>3
  • 3>2>1
  • None of these
Which of the following is most basic
  • C6H5NH2
  • (CH3)2NH
  • (CH3)3N
  • NH3
In the diazotisation of aniline with sodium nitrite and hdrochloric acid, an excess of hydrochloric acid is used primarily to
  • Suppress the concentration of free aniline available for coupling
  • Suppress hydrolysis of phenol
  • Insure a stoichiometric amount of nitrous acid
  • Neutralize the base liberated
Which one of the following is not a base
  • N2H4
  • N2OH
  • (CH3)3N
  • NH3
The correct order of increasing basic nature for the bases NH3,CH3NH2 and (CH3)2NH is 
  • CH3NH2<NH3<(CH3)2NH
  • (CH3)2NH<NH3<CH3NH2
  • NH3<CH3NH2<(CH3)2NH
  • CH3NH2<(CH3)2NH<NH3
If methyl is alkyl group, then which order of basicity is correct
  • R2NH>RNH2>R3N>NH3
  • R2NH>R3N>RNH2>NH3
  • RNH2>NH3>R2NH>R3N
  • NH3>RNH2>R2NH>R3N
Which one less of alkaline
  • All of these
Complete the following reaction
RNH2+H2SO4
  • [RNH3]+HSO4
  • [RNH3]+2SO24
  • RNH2.H2SO4
  • No reaction
Azo dye is prepared by the coupling of pehnol and :
  • Diazonium chloride
  • o-nitro aniline
  • Benzoic acid
  • Chlorobenzene
Which one of the following compound is most basic
1765302_eea66197db3646bc84153fe903f8bead.PNG
  • (A)
  • (B)
  • (C)
  • All are equally basic
The correct order of basicity of amines in water is 
  • (CH3)2NH>(CH3)3N>CH3NH2
  • CH3NH2>(CH3)2NH>(CH3)3N
  • (CH3)3N>(CH3)2NH>CH3NH2
  • (CH3)3N>CH3NH2>(CH3)2NH
Which of the following is/are correct?
  • PhOH has a higher boiling point than PhSH (benzenthiol).
  • pHydroquinone has a higher melting point than catechol.
  • oNitrophenol has a lower boiling point than m and pisomers.
  • oHydroxybenzaldehyde is more water soluble than m and pisomers.
Which is the weakest base among the followings?
The correct most basicity in amines is 
  • C4H5NH2
  • CH3NH2
  • (CH3)2NH
  • (CH3)3N
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