CBSE Questions for Class 12 Medical Chemistry Organic Compounds Containing Nitrogen Quiz 11 - MCQExams.com

Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of dilute hydrochloric acid. The compound so formed is reacted with a tetrafluoroborate which is subsequently heated. The final product is:
  • $$p-bromoaniline$$
  • $$p-bromofluorobenzene$$
  • $$1, 3, 5-tribromobenzene$$
  • $$2, 4, 6 - tribromofluorobenzene$$
Gabriel synthesis is used for synthesis of:
  • primary amines
  • secondary amines
  • aldehydes
  • acids
Gabriel phthalimide synthesis is used in the preparation of primary amine from phthalimide which of the following reagent is not used during the process?
  • HCl
  • NaOH
  • Alkyl Halides
  • KOH
Which one of the following will be most basic?
  • Aniline
  • P-methoxyaniline
  • P-nitroaniline
  • Benzylamine
The correct order of increasing basic nature for the bases $$NH_3, CH_3NH_2$$ and $$(CH_3)_2NH$$ in aqueous solutions.
  • $$NH_3 < CH_3NH_2 <(CH_3)_2NH$$
  • $$CH_3NH_2 < NH_3 < CH_3)_2NH$$
  • $$CH_3NH_2 < (CH_3)_2NH < NH_3$$
  • $$(CH_3)_2NH < NH_3 < CH_3NH_2$$
Which of the following is an example of carbylamine reaction?
  • $$2PhNH_2+CS_2\xrightarrow[\begin{matrix}\Delta\\(ii)\,conc.HCl\end{matrix}]{(i)KOH}Ph-NCS$$
  • $$R-NH_2+HNO_2\xrightarrow{0-5^oC} R- OH+N_2+HCl$$
  • $$Ph-NH_2+CHCl_3+3KOH(alc.)\xrightarrow{\Delta} Ph-NC+3KCl+3H_2O$$
  • $$Ph_2-NH+HONO\rightarrow Ph_2-N-N=O+H_2O$$
Arrange the following in the decreasing order of basic character.
I. p-toluidine
II. N, N-dimethyl-p-toluidine
III. p-nitroaniline
IV. Aniline
  • II > III > I > IV
  • I > II > III > IV
  • II > I > IV > III
  • IV > III > I > II
Pick the correct statement among the following.
  • Sodium lauryl sulphate forms an insoluble scum with hard water.
  • Sodium dodecyl benzene sulphonate used in tooth paste is a cationic detergent.
  • Cetyl-trimethyl ammonium bromide is a popular cationic detergent used in hair conditioner.
  • Non-ionic detergents is formed when polyethylene glycol reacts with adipic acid.
Amines behave as:
  • Lewis acids
  • Lewis base
  • aprotic acid
  • neutral compound
What is the final product?
782192_21c76051dadc471d9455c86ce68a87ed.png
Which is the strongest acid amongst the following compounds?
$$CH_3CH_2Cl \xrightarrow {NaCN}X \xrightarrow{Ni/H_2}Y \xrightarrow{acetic\, anhydride}Z$$ 
In the above reaction sequence, $$Z$$ is:
  • $$CH_3CH_2CH_2NHCOCH_3$$
  • $$CH_3CH_2CH_2NH_2$$
  • $$CH_3CH_2CH_2CONHCH_3$$
  • $$CH_3CH_2CH_2CONHCOCH_3$$
The order of basicity among the following compounds is:
640591_e9ab6a12616c47b5b1277a66d340cdfa.png
  • $$I > IV > III > II$$
  • $$II > I > IV > III$$
  • $$IV > I > II > III$$
  • $$IV > II > III > I$$
$$C{ H }_{ 3 }Br+KCN\left( alc. \right) \longrightarrow X\xrightarrow [ \quad Na+{ C }_{ 2 }{ H }_{ 5 }OH\quad  ]{ \quad Reduction\quad  } Y$$
What is $$Y$$ in the series?
  • $$C{ H }_{ 3 }CN$$
  • $${ C }_{ 2 }{ H }_{ 5 }CN$$
  • $${ C }_{ 2 }{ H }_{ 5 }N{ H }_{ 2 }$$
  • $$C{ H }_{ 3 }N{ H }_{ 2 }$$
Which of the following are P and S in the series of reactions?
642056_408143e8c37b49b781d101e6e93b158f.png
  • $$C_2H_5MgX$$ and $$(C_2H_5)_2NCH_3$$
  • $$CH_3MgX$$ and N-methyl-$$2$$-butanamine
  • $$CH_3MgX$$ and N-ethyl-$$2$$-butanamine
  • $$C_2H_5MgX$$ and $$(CH_3)_2NC_2H_5$$
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
How many $$\pi$$ electrons are present in the above conjugation compound?
712195_cb0bb664cf4647e7bed37600f0d1e25c.png
  • 2
  • 4
  • 6
  • None of these
Which one of the following is least basic in character? (Compare basicity at N-H position).
The order of basicity in increasing order is:
738292_976cf09e5f784f778b3b5b05c8c7dcfb.png
  • $$IV < I < III < II$$
  • $$II < I < IV < III$$
  • $$IV < III < I < II$$
  • $$II < III < I < IV$$
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
In the following reaction the major product is:
738289_239d9a8aab0d47ffb669909ce07438c4.png
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
  • $$(b)<(a)<(d)<(c)$$
  • $$(d)<(b)<(a)<(c)$$
  • $$(a)<(b)<(c)<(d)$$
  • $$(b)<(a)<(c)<(d)$$
Which of the following compound is strongest base?
  • $${ CH }_{ 3 }CO{ NH }_{ 2 }$$
  • $${ NH }_{ 2 }CO{ NH }_{ 2 }$$
  • $$NH_2 - \overset{NH}{\overset{||}{C}} - NH_2$$
  • $${ CH }_{ 3 }CONHCO{ CH }_{ 3 }$$
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 order of basic strength the above compound is:
785369_71bb3b3e433349faa3e39745d72e62fe.png
  • $$a > b > c$$
  • $$b > a > c$$
  • $$c > a > b$$
  • $$c > b > a$$
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
Choose the correct order of basic strength?
877181_803d912ac7274275949cffcc07c8854c.png
  • III >II >I
  • III > I > II
  • II >I > III
  • I > II > III
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:
$$ \xrightarrow [ { H }^{ + } ]{ \Delta  }$$ (Major product )
1067472_bb4ef485ca7e42ddb90675ccca9b2b13.png
  • $$CH_3 - \underset{O}{\underset{||}{C}} - NH - Ph$$
  • $$PhCH_2 - \underset{O}{\underset{||}{C}} - NH_2$$
  • $$Ph - \underset{O}{\underset{||}{C}} - NHCH_3$$
  • $$PhCH_2CH_2NH_2$$
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
The correct basic strength order of following anions is :
  • $${CH_3 -{C}{H_2}}^- >{{N}{H_2}}^- > {CH_2 = {C}{H}}^- >{ CH \equiv {C}}^- > H{O}^- > {F}^-$$
  • $${N}{H_2}^- > {C}{H_3} - {C}{H_2}^- > CH_2 = {C}{H}^- > CH \equiv {C}^- > {F}^- > H{O}^-$$
  • $$CH_3 -{C}{H_2}^- > CH_2 = {C}{H}^- >{N}{H_2}^- > CH \equiv {C}^- > H{O}^- > {F}^-$$
  • $$ {F}^- > H{O}^- > CH \equiv{C}^- > {C}{H_2} = {C}{H}^- >{N}{H_2} ^-> CH_3 -{C}{H_2}^-$$
.The order of basicity of the above compounds is:
879703_e10460a1b2a448999875d0267e0d0a26.png
  • $$P>Q>R>S$$
  • $$Q>S>R>P$$
  • $$S>R>Q>P$$
  • $$R>S>Q>P$$
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 $$NH_3$$
Product of this reaction is?
993148_42e3f8c6aa9c469ea84a9607f8dab2a1.png
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 solubility of diethyl ether in water is comparable with that of:
  • ethanamine
  • chlorobutane
  • 1-butanol
  • ethanol
Identify $$Z$$ in the sequence.
$$C_6H_5NH_2 \xrightarrow [273K]{NaNO_2 + HCl} \, X\, \xrightarrow{CuCN} \, Y\, \xrightarrow [Boil]{H^+/H_2O} \, Z\,$$
  • $$C_6H_5CN$$
  • $$C_6H_5CONH_2$$
  • $$C_6H_5COOH$$
  • $$C_6H_5CH_2NH_2$$
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?

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:
  • $$2>1>3>4$$
  • $$1>3>2>4$$
  • $$3>1>2>4$$
  • $$1>2>3>4$$
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