CBSE Questions for Class 12 Engineering Chemistry Amines Quiz 11 - MCQExams.com

The increasing order of reactivity of these diazonium ions in azo-coupling reaction (under similar conditions) will be:

696237_056dce1f62ad45b386e2aa52f59da6eb.png
  • I < IV < II < III
  • I < III < IV < II
  • III < II < IV < I
  • III < I < IV < II
Among the following amines, which one has the highest $$pK_{b}$$ value in aqueous solution?
  • Methanamine
  • N, N-dimethylaniline
  • Ethanamine
  • Benzenamine
  • None of the above
Which of the following is a correct decreasing order of boiling points of the given isometric compounds:
Ethyldimethyl amine (I), n-butylamine (II), Diethylamine (III)
  • $$II> III> I$$
  • $$I> II> III$$
  • $$III> II> I$$
  • $$III> I> II$$
The correct order of basic strength of the following are:
654824_f2682514a72d473084093f47e0c4f192.png
  • $$1 > 2 > 3 > 4$$
  • $$4 > 2 > 3 > 1$$
  • $$3 > 4 > 2 > 1$$
  • $$3 > 2 > 4 > 1$$
I: $$CH_2 = CHCH_2NH_2,$$ II:$$ CH_3CH_2CH_2NH_2,$$III: $$CH\equiv CCH_2NH_2$$
What is the correct order of basicity of the above compounds?
  • I $$>$$ II $$>$$ III
  • II $$>$$ I $$>$$ III
  • III $$>$$ II $$>$$ I
  • II $$<$$ III $$<$$ I
Which one of the following is least basic in character? (Compare basicity at N-H position).
How many $$\pi$$ electrons are present in the above conjugation compound?
712195_cb0bb664cf4647e7bed37600f0d1e25c.png
  • 2
  • 4
  • 6
  • None of these
Which of the following compound is strongest base?
  • $${ CH }_{ 3 }CO{ NH }_{ 2 }$$
  • $${ NH }_{ 2 }CO{ NH }_{ 2 }$$
  • $$NH_2 - \overset{NH}{\overset{||}{C}} - NH_2$$
  • $${ CH }_{ 3 }CONHCO{ CH }_{ 3 }$$
What is the final product?
782192_21c76051dadc471d9455c86ce68a87ed.png
The order of basic strength the above compound is:
785369_71bb3b3e433349faa3e39745d72e62fe.png
  • $$a > b > c$$
  • $$b > a > c$$
  • $$c > a > b$$
  • $$c > b > a$$
Which is the strongest acid amongst the following compounds?
Decreasing order of basicity is?
(i) $$CH_3NH_2$$
(ii) $$C_6H_5CH_2NH_2$$
(iii) $$p-CH_3O-C_6H_4-NH_2$$
(iv) $$m-CH_3O-C_6H_4-NH_2$$
  • I $$>$$ II $$>$$ III $$>$$ IV
  • II $$>$$ IV $$>$$ I $$>$$ III
  • II $$>$$ IV $$>$$ III $$>$$ I
  • IV $$>$$ I $$>$$ II $$>$$ III
The compunds X and Y are respectively
877086_d398741d5eef40a98dce8c1e520a0104.png
  • $$C{ H }_{ 3 }C{ H }_{ 2 }N{ H }_{ 2 },C{ H }_{ 2 }COCl$$
  • $$C{ H }_{ 3 }CON{ H }_{ 2 },C{ H }_{ 3 }C{ H }_{ 2 }Cl$$
  • $$C{ H }_{ 3 }C{ OOH }_{ 2 },C{ H }_{ 3 }C{ ONH }_{ 2 }$$
  • $$C{ H }_{ 3 }CON{ H }_{ 2 },C{ H }_{ 3 }C{ OOH }$$
Which of the following amino acid has pH greater than $$7$$?
  • Glutamic acid
  • Lysine
  • Glycine
  • Alanine
The increasing order of diazotisation of the following compounds is:
870099_f0e07ac5a4c449dda65875e5abe3c3ed.png
  • $$(D) < (C) < (B) < (A)$$
  • $$(A) < (D) < (B) < (C)$$
  • $$(A) < (B) < (C) < (D)$$
  • $$(A) < (D) < (C) < (B)$$
The increasing order of basicity of the above compounds is:
845586_6f7199eba3ed4da59058916f3c861cbc.png
  • $$(b)<(a)<(d)<(c)$$
  • $$(d)<(b)<(a)<(c)$$
  • $$(a)<(b)<(c)<(d)$$
  • $$(b)<(a)<(c)<(d)$$
What is the order of basic strength of the following? 
878759_ea078000830641918c99d558c01a710e.png
  • 1>2>3>4
  • 4>1>2>3
  • 4>3>1>2
  • 3>4>1>2
Which order for amines is incorrect?
  • Order of basicity in aq. medium.
  • Order of boiling point.
  • Order of basicity in gaseous state.
  • The order of aqueous solubility.
The decreasing order of boiling points of ethyldimethylamine, n- butylamine and diethylamine is n - Butylamine > Diethylamine > Ethyldimethylamine. This trend of the boiling point can be explained as:
  • boiling point increases with increase in molecular mass
  • tertiary amines have highest boiling point due to highest basicity
  • intermolecular hydrogen bonding is maximum in primary amines and absent in tertiary amines
  • intramolecular hydrogen bonding is present in tertiary amines
Aniline when diazotised in cold and then treated with N, N - dimethylaniline gives a coloured product. The structure of this product is:
The best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is:
  • Hofmann bromamide reaction
  • Gabriel phthalimide synthesis
  • Sandmeyer reaction
  • Reaction with $$NH_3$$
Reduction of $$CH_3CH_2NC$$ with hydrogen in presence of $$Ni$$ or $$Pt$$ as catalyst gives:
  • $$CH_3CH_2NH_2$$
  • $$CH_3CH_2NHCH_3$$
  • $$CH_3CH_2NHCH_2CH_3$$
  • $$(CH_3)_3N$$
Most basic species amongst  the following is:
Arrange the following compounds in increasing order of basicity.
$$CH_3NH_2, \, (CH_3)_2NH,\,NH_3, \, C_6H_5NH_2$$
  • $$C_6H_5NH_2 \, <\, NH_3 \, <\,(CH_3)_2NH \,<\, CH_3NH_2$$
  • $$CH_3NH_2 \, <\, (CH_3)_2NH\, <\, NH_3 \,<\,C_6H_5NH_2$$
  • $$C_6H_5NH_2 \, <\, NH_3 \,<\, CH_3NH_2\, <\, (CH_3)_2NH$$
  • $$(CH_3)_2NH \,<\, CH_3NH_2\,<\, NH_3 \,<\, C_6H_5NH_2$$
The correct basic strength order of following anions is :
  • $${CH_3 -{C}{H_2}}^- >{{N}{H_2}}^- > {CH_2 = {C}{H}}^- >{ CH \equiv {C}}^- > H{O}^- > {F}^-$$
  • $${N}{H_2}^- > {C}{H_3} - {C}{H_2}^- > CH_2 = {C}{H}^- > CH \equiv {C}^- > {F}^- > H{O}^-$$
  • $$CH_3 -{C}{H_2}^- > CH_2 = {C}{H}^- >{N}{H_2}^- > CH \equiv {C}^- > H{O}^- > {F}^-$$
  • $$ {F}^- > H{O}^- > CH \equiv{C}^- > {C}{H_2} = {C}{H}^- >{N}{H_2} ^-> CH_3 -{C}{H_2}^-$$
Identify $$Z$$ in the sequence.
$$C_6H_5NH_2 \xrightarrow [273K]{NaNO_2 + HCl} \, X\, \xrightarrow{CuCN} \, Y\, \xrightarrow [Boil]{H^+/H_2O} \, Z\,$$
  • $$C_6H_5CN$$
  • $$C_6H_5CONH_2$$
  • $$C_6H_5COOH$$
  • $$C_6H_5CH_2NH_2$$

The correct order of decreasing basicity of the above compounds is :
1042926_25053331d1844ab7a73995557e49855e.png
  • I $$>$$ II $$>$$ III $$>$$ IV
  • II $$>$$ I $$>$$ III $$>$$ IV
  • III $$>$$ IV $$>$$ I $$>$$ II
  • II $$>$$ I $$>$$ IV $$>$$ III
$$CH_3-\overset{\,\,\,\,\,NH}{\overset{||}{\underset{(1)}{C}}}-NH_2$$,  $$CH_3-\underset{(2)}{CH_2}-NH_2$$


$$\underset{(3)}{(CH_3)_2}NH$$,             $$CH_3-\overset{O}{\overset{||}{\underset{(4)}{C}}}-NH_2$$
The correct order of the basicities of the following compounds is:
  • $$2>1>3>4$$
  • $$1>3>2>4$$
  • $$3>1>2>4$$
  • $$1>2>3>4$$
Product of this reaction is?
993148_42e3f8c6aa9c469ea84a9607f8dab2a1.png
Which is most volatile?
  • $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ NH }_{ 2 }$$
  • $${ \left( { CH }_{ 3 } \right) }_{ 3 }N$$
  • $${ CH }_{ 3 }OH$$
$$ \xrightarrow [ { H }^{ + } ]{ \Delta  }$$ (Major product )
1067472_bb4ef485ca7e42ddb90675ccca9b2b13.png
  • $$CH_3 - \underset{O}{\underset{||}{C}} - NH - Ph$$
  • $$PhCH_2 - \underset{O}{\underset{||}{C}} - NH_2$$
  • $$Ph - \underset{O}{\underset{||}{C}} - NHCH_3$$
  • $$PhCH_2CH_2NH_2$$
The correct order of decreasing basicity of the given compounds is :
1040877_a7402be6ee15467587a99ebd6641312f.png
  • I $$>$$ II $$>$$ III $$>$$ IV
  • II $$>$$ I $$>$$ IV $$>$$ III
  • III $$>$$ IV $$>$$ II $$>$$ I
  • II $$>$$ I $$>$$ III $$>$$ IV
Which is the weakest base among the followings?
The solubility of diethyl ether in water is comparable with that of:
  • ethanamine
  • chlorobutane
  • 1-butanol
  • ethanol
Compare the basic strength of compounds given:
989406_70c78876485140eebe89d9a7aa2e9e16.PNG
  • $$(i) > (ii) > (iii)$$
  • $$(ii) > (i) > (iii)$$
  • $$(ii) > (iii) > (i)$$
  • $$(iii) > (ii) > (i)$$
Which of the following compound is the most basic?
Which of the following aryl amine undergoes diazotization most readily?
The correct order of basicites of the following compounds is:-
1120616_abfd2430f2e3455f9c1e84d74212f7b7.png
  • $$II > I > III > IV$$
  • $$I > III > II > IV$$
  • $$III > I > II > IV$$
  • $$I > II > III > IV$$
$$CH_3NH_2     \quad \underrightarrow{{(CH_3COOCH_3)}, { \Delta}} \quad X$$ 
  • X is more basic than $$CH_3NH_2$$
  • X is less basic than $$CH_3NH_2$$
  • X is a tertiary amine
  • None

The correct decreasing order of $$p{ K }_{ b }$$:
1100454_2c0bc11f831545d48aa9d2367a97691d.png
  • $$I>II>III>IV$$
  • $$III>IV>II>I$$
  • $$II>III>IV>I$$
  • $$IV>II>I>III$$
Which of the following cannot exist in room temperature?
The correct order of the $$pKa$$ values for the conjugate acids of the heterocyclic compound is:

1076452_38f9f45c138e472fade16ff238d1ae6a.png
  • $$II > III > I > IV$$
  • $$IV > II > III > I$$
  • $$III > II > IV > I$$
  • $$III > IV > II > I$$
Diazomethane was photolysed to generate singlet carbine which was treated with cis-2-butene. The main product(s) of the reaction is/are:
  • cis-1, 2-dimethylcyclopropane
  • trans-1, 2-dimethylcyclopropane
  • mixture of $$(A)$$ and $$(B)$$
  • Ethylcyclopropane
Identify the most basic compound from the following.
  • Primary amines 
  • Secondary amines 
  •  Aromatic amines 
  •  Aliphatic amines
Final product (III) obtained in the reaction sequence is:
1162767_105554882cd841618578df29e5d69283.png
Which of the following amines cannot be prepared by path-1?
Which of the following compound(s) will not dissolve in an alkali solution after it has undergone reaction with Hinsberg's reagent?
  • Diethyl amine
  • Isopropyl amine
  • N-methyl ehtanamine
  • N,N-dimethyl aniline
Number of isomeric primary amines obtained from $$C_4H_{11}N$$ are :
  • 3
  • 4
  • 5
  • 6
Given compound is a:
1152829_9dd2651181644a98bbcc5cce1b7c7ed6.png
  • Primary amine
  • Secondary amine
  • Tertiary amine
  • Ammonium salt
Amongest the following the most basic compound is:
  • p-nitro aniline
  • Acetanilide
  • Aniline
  • Benzylamine
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