CBSE Questions for Class 12 Engineering Chemistry Amines Quiz 8 - MCQExams.com

The basicity order of $$I, II$$ and $$III$$ is
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  • $$III > I > II$$
  • $$I > II > III$$
  • $$III > II > I$$
  • $$II > III > I$$
Consider the following compounds, What is the correct order of basicity of the above compounds?
1726649_163ce48fa5f4491e83f1c161dc83097a.jpg
  • $$I > II > IIl$$
  • $$III > I > II$$
  • $$III > II > I$$
  • $$I > III > II$$
Which of the following is least basic?
  • Aniline
  • $$p-Methylaniline$$
  • 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 
  • $$CH_{3}NH_{2}> (CH_{3})_{3} N> (CH_{3})_{2}NH$$
  • $$(CH_{3})_{2}NH> CH_{3}NH_{2}> (CH_{3})_{3}N$$
  • $$CH_{3}NH_{2}> (CH_{3})_{2}NH> (CH_{3})_{3}N$$
  • $$(CH_{3})_{3}N> CH_{3}NH_{2}> (CH_{3})_{2}NH$$
Order of basicity of ethyl amines in aqueous medium is 
  • $$Secondry> primary> Tertiary$$
  • $$primary>Secondry>Tertiary$$
  • $$Secondry>Tertiary> primary$$
  • $$Tertiary> primary> Secondry$$
Which of the following is $$ 1^0 $$ amine
  • Ethylene diamine
  • Dimethyl amine
  • Trimethyl amine
  • N-methyl aniline
Gabriel's phthalimide synthesis is used for the preperation of 
  • primary aromatic amine
  • Secondary acid
  • Primary aliphatic amine
  • Tertiary amine
Which of the following compound is expected to be most basic 
  • Aniline
  • Methylamine
  • Hydroxylamine
  • Ethylamine
Compounds containing both amino and COOH groups are known as
  • Diamines
  • unknown
  • Amino acids
  • Enzymes
The strongest base among the following is 
Correct the order of increasing basicity is 
  • $$NH_3 < C_6H_5NH_2 < (C_2H_5)_2NH < C_2H_5NH_2 < (C_2H_5)_3N$$
  • $$C_6H_5NH_2 < NH_3 < (C_2H_5)_3N < (C_2H_5)_2NH < C_2H_5NH_2$$
  • $$ C_{6}H_{5}NH_{2}< NH_{3}< C_{2}H_{5}NH_{2}< (C_{2}H_{5})_{3}N< (C_{2}H_{5})_{2}NH $$
  • $$C_6H_5NH_2 < (C_2H_5)_3N < NH_3 < C_2H_5NH_2 < (C_2H_5)_2NH$$
By the presence of a halogen atom in the ring, basic properties of aniline is 
  • Increased
  • Decreased
  • unchanged
  • Doubled
Which of the following is most basic
  • $$ C_{6}H_{5}NH_{2} $$
  • $$ (CH_{3})_{2}NH $$
  • $$ (CH_{3})_{3}N $$
  • $$ NH_{3} $$
Which one of the following is not a base
  • $$ N_{2}H_{4} $$
  • $$ N_{2}OH $$
  • $$ (CH_{3})_{3}N $$
  • $$ NH_{3} $$
Which of the following amines would undergoes diazotisation
  • Primary aliphatic amines
  • Primary aromatics amines
  • Both (a) and (b)
  • None of these
If methyl is alkyl group, then which order of basicity is correct
  • $$R_{2}NH> RNH_{2}> R_{3}N> NH_{3}$$
  • $$R_{2}NH> R_{3}N> RNH_{2}> NH_{3}$$
  • $$RNH_{2}> NH_{3}> R_{2}NH> R_{3}N$$
  • $$NH_{3}> RNH_{2}> R_{2}NH> R_{3}N$$
Which one less of alkaline
  • All of these
The decreasing order of the  basic character of the three amines and ammonia is 
  • $$ NH_{3}> CH_{3}NH_{2}> C_{2}H_{5}NH_{2}> C_{6}H_{5}NH_{2} $$
  • $$ C_{2}H_{5}NH_{2}> CH_{3}NH_{2}> NH_{3}> C_{6}H_{5}NH_{2} $$
  • $$ C_{6}H_{5}NH_{2}> C_{2}H_{5}NH_{2}> CH_{3}NH_{2}> NH_{3} $$
  • $$ CH_{3}NH_{2}>C_{2}H_{5}NH_{2}>C_{6}H_{5}NH_{2}> NH_{3} $$
Among the following compounds nitrobenzene , benzene, aniline and phenol, the strongest basic behaviuor  in acid medium is exhibited by :
  • Phenol
  • Aniline
  • Nitrobenzene
  • Benzene
Among the following the weakest base is 
  • $$ C_{6}H_{5}CH_{2}NH_{2} $$
  • $$ C_{6}H_{5}CH_{2}NHCH_{3} $$
  • $$ O_{2}N CH_{2} NH_{2} $$
  • $$ CH_{3} NH CHO $$
Arrange the following in increasing order of basicity 
$$ CH_{3}NH_{2},(CH_{3})_{2}NH,C_{6}H_{5}NH_{2},(CH_{3})_{3}N $$
  • $$ (CH_{3})_{3}N< (CH_{3})_{2}NH< CH_{3}NH_{2}< C_{6}H_{5}NH_{2} $$
  • $$ (CH_{3})_{3}N> (CH_{3})_{2}NH> CH_{3}NH_{2}> C_{6}H_{5}NH_{2} $$
  • $$ C_{6}H_{5}NH_{2}< (CH_{3})_{3}N< CH_{3}NH_{2}< (CH_{3})_{2}NH $$
  • $$ C_{6}H_{5}NH_{2}> (CH_{3})_{3}N> CH_{3}NH_{2}> (CH_{3})_{2}NH $$
Decreasing order of basicity is 
(1) $$ CH_3CONH_2$$
(2)$$ CH_{3}CH_{2}NH_2 $$
(3) $$ Ph-CH_{2}CONH_{2} $$
  • $$ 1> 2> 3 $$
  • $$ 2> 1> 3 $$
  • $$ 3> 2>1 $$
  • None of these
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
Complete the following reaction
$$ R NH_{2}+H_{2}SO_{4}\rightarrow  $$
  • $$ \left [ R NH_{3} \right ]^{+}HSO^{-}_{4} $$
  • $$ \left [ R NH_{3} \right ]^{+}_{2}SO^{2-}_{4} $$
  • $$ R NH_{2}.H_{2}SO_{4} $$
  • 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 increasing basic nature for the bases $$ NH_{3} $$,$$ CH_{3}NH_{2} $$ and $$ (CH_{3})_{2}NH $$ is 
  • $$ CH_{3}NH_{2}< NH_{3}< (CH_{3})_{2}NH $$
  • $$ \left ( CH_{3} \right )_{2}NH< NH_{3}< CH_{3}NH_{2} $$
  • $$ NH_{3}< CH_{3}NH_{2}< (CH_{3})_{2}NH $$
  • $$ CH_{3}NH_{2}< (CH_{3})_{2}NH< NH_{3} $$
The correct order of basicity of amines in water is 
  • $$ (CH_{3})_{2}NH> (CH_{3})_{3}N> CH_{3}NH_{2} $$
  • $$ CH_{3}NH_{2}> (CH_{3})_{2}NH> (CH_{3})_{3}N $$
  • $$ (CH_{3})_{3}N> (CH_{3})_{2}NH> CH_{3}NH_{2} $$
  • $$ (CH_{3})_{3}N> CH_{3}NH_{2}> (CH_{3})_{2}NH $$
Which of the following is/are correct?
  • $$PhOH$$ has a higher boiling point than $$PhSH$$ (benzenthiol).
  • $$p-Hydroquinone$$ has a higher melting point than catechol.
  • $$o-Nitrophenol$$ has a lower boiling point than $$m-$$ and $$p-isomers$$.
  • $$o-Hydroxybenzaldehyde$$ is more water soluble than $$m-$$ and $$p-isomers$$.
The correct most basicity in amines is 
  • $$ C_{4}H_{5}NH_{2} $$
  • $$ CH_{3}NH_{2} $$
  • $$ (CH_{3})_{2}NH $$
  • $$ (CH_{3})_{3}N $$
The correct IUPAC name for $$CH_{2}=CHCH_{2}NHCH_{3}$$ is
  • Allylmethylemine
  • $$2-$$ amino $$-4-$$ pentene
  • $$4-$$ aminopent $$-1-$$ ene
  • $$N-$$ methylprop $$-2-$$ en $$-1-$$ amine
The correct decreasing order of basic strength of the following species is:

$$H_{2}O, NH_{3}, OH^{-}, NH_{2}^{-}$$
  • $$NH_{2}^{-} > OH^{-} > NH_{3} > H_{2}O$$
  • $$OH^{-} > NH_{2}^{-} > H_{2}O > NH_{3}$$
  • $$NH_{3} > H_{2}O > NH_{2}^{-} > OH^{-}$$
  • $$H_{2}O > NH_{3} > OH^{-} > NH_{2}^{-}$$
Aniline dissolves in $$HCl$$ due to the formation of:
  • anilinium chloride
  • o-chloroaniline
  • azo dye
  • diazonium chloride
Gabriel phthalimide reaction is used for the preparation of: 
  • primary aromatic amines
  • secondary amines
  • primary aliphatic amines
  • tertiary amines
Diphenyl hydrazine is same as :
  • azoxybenzene
  • azobenzene
  • hydrazobenzene
  • aniline
The compound formed when aniline reacts with benzene diazonium chloride is:
  • p-amino azobenzene
  • anilinium chloride
  • p-hydroxy azobenzene
  • diphenyl amine
Out of the following compounds, which is the most basic in aqueous solution?
  • $${ CH }_{ 3 }{ NH }_{ 2 }$$
  • $$\left( { CH }_{ 3 } \right) _{ 2 }NH$$
  • $$\left( { CH }_{ 3 } \right) _{ 3 }N$$
  • $${ C }_{ 6 }{ H }_{ 5 }{ NH }_{ 2 }$$
Which of the following has the maximum value of $${ pk_b }$$?
  • $$\left( { CH }_{ 3 } \right) _{ 2 }NH$$
  • $$\left( { CH }_{ 3 }{ CH }_{ 2 } \right) _{ 2 }NH$$
  • $$C_6H_5-NH-C_6H_5$$
  • $$C_6H_5-NH-CH_3$$
Arrange the following in the correct order of their basic character in the aqueous phase.

$$(i)$$ $${ NH }_{ 3 }$$

$$(ii)$$ $${ RNH }_{ 2 }$$

$$(iii)$$ $${ R }_{ 2 }NH$$

$$(iv)$$ $${ R }_{ 3 }N$$
  • $$IV > III > II > I$$
  • $$III > IV > II > I$$
  • $$III > II > IV > I$$
  • $$I > II > III > IV$$
The colour of dye formed in the reaction between benzene diazonium chloride and phenol is:
  • yellow
  • orange
  • purple
  • blue
Which of the following when treated with aniline will give benzene diazonium chloride as the major product?
  • $${ NaNO }_{ 2 }$$ and $$HCl$$ between $$0-{ 5 }^{ 0 }C$$
  • $${ HNO }_{ 3 }$$ and $$HCl$$ between $$0-{ 5 }^{ 0 }C$$
  • $${ C }_{ 6 }{ H }_{ 5 }{ NO }_{ 2 }$$ between $$0-{ 5 }^{ 0 }C$$
  • $${ NaNO }_{ 2 }$$ between $$0-{ 5 }^{ 0 }C$$
Which of the following statements is not correct?
  • Primary amines show intermolecular hydrogen bonding.
  • Secondary amines show intermolecular hydrogen bonding.
  • Tertiary amines show intermolecular hydrogen bonding.
  • Amines have lower boiling points as compared to those of alcohols and carboxylic acids of comparable molar masses.
Which of the following orders is correct regarding the basic strength of subsituted aniline ?
  • p - nitroaniline > p - aminobenzaldehyde > p- bromoaniline
  • p - nitroaniline < p - bromoaniline < p- aminobenzaldehyde
  • p - nitroaniline < p - aminobenzaldehyde < p- bromoaniline
  • p - nitroaniline > p - aminobenzaldehyde < p-bromoaniline
Which of the following undergoes diazotization?
  • $${ CH }_{ 3 }{ NH }_{ 2 }$$
  • $${ C }_{ 6 }{ H }_{ 5 }{ NH }_{ 2 }$$
  • $${ CH }_{ 3 }{ CONH }_{ 2 }$$
  • $${ CH }_{ 3 }N\left( { CH }_{ 3 } \right) _{ 2 }$$
$${ CaC }_{ 2 }\xrightarrow { Hydrolysis } A\xrightarrow [ Cu\:tube ]{ Red\:hot } B\xrightarrow [ { 50-60 }^{ 0 }C ]{ { HNO }_{ 3 }-{ H }_{ 2 }{ SO }_{ 4 } } C\xrightarrow { Fe+HCl }  D \xrightarrow { { NaNO }_{ 2 }+HCl,\:{ 0}^{ 0 }C } E$$

In the reaction sequence given above, $$E$$ is:
  • aniline
  • benzene diazonium chloride
  • phenyl osazone
  • benzoyl chloride
The correct order of basicity of the given compounds is :
  • $$CH_{3} CH_{2} NH_{2} < HO(CH_{2})_{3}NH_{2}< HO(CH_{2})_{2}NH_{2}$$
  • $$CH_{3} CH_{2} NH_{2} < HO(CH_{2})_{3}NH_{2}> HO(CH_{2})_{2}NH_{2}$$
  • $$CH_{3} CH_{2} NH_{2} > HO(CH_{2})_{3}NH_{2}> HO(CH_{2})_{2}NH_{2}$$
  • $$CH_{3} CH_{2} NH_{2} > HO(CH_{2})_{3}NH_{2}< HO(CH_{2})_{2}NH_{2}$$
$${ CH }_{ 3 }{ CH }_{ 2 }Cl\xrightarrow { NaCN } X\xrightarrow { Pt/{ H }_{ 2 } } Y\xrightarrow [ anhydride ]{ Acetic  } Z$$ 
In the above sequence, $$Z$$ is:
  • $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ NHCOCH }_{ 3 }$$
  • $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ NH }_{ 2 }$$
  • $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ CONHCH }_{ 3 }$$
  • $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ CONHCOCH }_{ 3 }$$
Amongst the following, the most basic compound is :
  • benzylamine
  • aniline
  • acetanilide
  • p-nitroaniline
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