Amines & Nitrogen Compounds · JEE Main previous year questions

Which statements are True ? A. In Hoffmann bromamide degradation, 4 moles of $\mathrm{NaOH}$ and 2 moles of $\mathrm{B}{\mathrm{r}}_2$ are consumed per mole of an amide B. Hoffmann bromamide reaction is not given by alkyl amides. C. Primary amines can be synthesized by Hoffmann bromamide degradation. D. Secondary amide on reaction with $\mathrm{B}{\mathrm{r}}_2$ and $\mathrm{NaOH}$ will give secondary amine. E. The by-products of Hoffmann degradation are $\mathrm{N}{\mathrm{a}}_2\mathrm{C}{\mathrm{O}}_3$, $\mathrm{NaBr}$ and ${\mathrm{H}}_2\mathrm{O}$. Choose the correct answer from the options given below :

1. A.A, C and E only
2. B.B, C and D only
3. C.C and E only
4. D.C, D and E only

Match the LIST-I with LIST-II $$\begin{array}{llll}\text{List-I}& & \text{List-II}& \\ \text{Amino acid}& & \text{Positive reaction/Test for functional}& \\ & & \text{group present in side chain of}& \\ & & \text{amino acid}& \\ \text{A.}& \text{Glutamine}& \text{I.}& \text{Hinsberg’s test}\\ \text{B.}& \text{Lysine}& \text{II.}& \text{Neutral }\mathrm{FeC}{\mathrm{l}}_3\text{ test}\\ \text{C.}& \text{Tyrosine}& \text{III.}& \text{Ceric ammonium nitrate test}\\ \text{D.}& \text{Serine}& \text{IV.}& \text{Hoffman bromamide degradation}\end{array}$$ Choose the correct answer from the options given below:

1. A.A-IV, B-II, C-I, D-III
2. B.A-IV, B-I, C-II, D-III
3. C.A-III, B-II, C-I, D-IV
4. D.A-IV, B-I, C-III, D-II

1. A.5
2. B.4
3. C.3
4. D.6

1. A.A and B Only
2. B.A and C Only
3. C.B and D Only
4. D.D and E Only

1. A.A and D Only
2. B.A and C Only
3. C.B and C Only
4. D.A and B Only

Given below are two statements : Statement I : Heating benzamide with bromine in an ethanolic solution of sodium hydroxide will give benzylamine. Statement II : Nitration of aniline with $\mathrm{HN}{\mathrm{O}}_3/{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4$ at $288\mathrm{K}$ produces $m$-nitroaniline in higher amount than $o$-nitroaniline ($\mathrm{pH}$ adjusted). In the light of the above statements, choose the $\underline{\text{correct}}$ answer from the options given below :

1. A.Both Statement I and Statement II are true
2. B.Both Statement I and Statement II are false
3. C.Statement I is true but Statement II is false
4. D.Statement I is false but Statement II is true

1. A.A-III, B-I, C-IV, D-II
2. B.A-III, B-IV, C-I, D-II
3. C.A-I, B-III, C-II, D-IV
4. D.A-I, B-II, C-III, D-IV

Match List - I with List - II. $$\begin{array}{llll}& \text{List - I}& & \text{List - II}\\ & \text{Chromium (III) Complexes}& & {\Delta }_0(\mathrm{c}{\mathrm{m}}^{-1})\\ & (\mathrm{en}=\mathrm{ethylene}\mathrm{diamine})& & \\ \text{A.}& [\mathrm{Cr}(\mathrm{CN}{)}_6{]}^{3-}& \text{I.}& 15,060\\ \text{B.}& [\mathrm{Cr}{\mathrm{F}}_6{]}^{3-}& \text{II.}& 17,400\\ \text{C.}& [\mathrm{Cr}({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{3+}& \text{III.}& 22,300\\ \text{D.}& [\mathrm{Cr}(\mathrm{en}{)}_3{]}^{3+}& \text{IV.}& 26,600\end{array}$$ Choose the correct answer from the options given below :

1. A.A-I, B-II, C-III, D-IV
2. B.A-II, B-III, C-IV, D-I
3. C.A-III, B-IV, C-I, D-II
4. D.A-IV, B-I, C-II, D-III

Match List - I with List - II. $$\begin{array}{llll}& \text{List - I}& & \text{List - II}\\ & \text{Vitamin}& & \text{Name}\\ \text{A.}& \text{Vitamin }{\mathrm{B}}_1& \text{I.}& \text{Pyridoxine}\\ \text{B.}& \text{Vitamin }{\mathrm{B}}_2& \text{II.}& \text{Ascorbic acid}\\ \text{C.}& \text{Vitamin }{\mathrm{B}}_6& \text{III.}& \text{Thiamine}\\ \text{D.}& \text{Vitamin C}& \text{IV.}& \text{Riboflavin}\end{array}$$ Choose the correct answer from the options given below :

1. A.A-II, B-I, C-III, D-IV
2. B.A-IV, B-III, C-II, D-I
3. C.A-III, B-IV, C-I, D-II
4. D.A-I, B-III, C-II, D-IV

Given below are two statements: Statement I : Griess-Ilosvay test is used for the detection of nitrite ion, which involves the use of sulphanilic acid and $\alpha$-naphthylamine reagent. Statement II : In the above test, sulphanilic acid is diazotized by the acidified nitrite ion, which on further coupling with $\alpha$-naphthylamine forms an azo-dye. In the light of the above statements, choose the correct answer from the options given below

1. A.Statement I is true but Statement II is false
2. B.Both Statement I and Statement II are false
3. C.Statement I is false but Statement II is true
4. D.Both Statement I and Statement II are true

Total number of alkali insoluble solid sulphonamides obtained by reaction of given amines with Hinsberg's reagent is ________. Aniline, N-Methylaniline, Methanamine, N,N-Dimethylmethanamine, N-Methyl methanamine, Phenylmethanamine, N-propylaniline, N-phenylaniline, N,N-Dimethylaniline, Allyl amine, Isopropyl amine

1. A.8
2. B.5
3. C.2
4. D.4

1. A.$C>D>B>A$
2. B.$A>C>D>B$
3. C.$A>B>C>D$
4. D.$C>A>D>B$

1. A.
2. B.
3. C.
4. D.

Match List - I with List - II | List - I (Separation of) | List - II (Separation Technique) | | :--- | :--- | | (A) Aniline from aniline-water mixture | (I) Simple distillation | | (B) Glycerol from spent-lye in soap industry | (II) Fractional distillation | | (C) Different fractions of crude oil in petroleum industry | (III) Distillation at reduced pressure | | (D) Chloroform-Aniline mixture | (IV) Steam distillation | Choose the correct answer from the options given below :

1. A.(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
2. B.(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
3. C.(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
4. D.(A)-(II), (B)-(I), (C)-(IV), (D)-(III)

1. A.
2. B.
3. C.
4. D.

The correct order of basic nature in aqueous solution for the bases ${\mathrm{NH}}_3,{\mathrm{H}}_2\mathrm{N}-{\mathrm{NH}}_2,{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2,({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_2\mathrm{NH}$ and $({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_3\mathrm{N}$ is :

1. A.${\mathrm{NH}}_3<{\mathrm{H}}_2\mathrm{N}-{\mathrm{NH}}_2<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_3\mathrm{N}<{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_2\mathrm{NH}$
2. B.${\mathrm{H}}_2\mathrm{N}-{\mathrm{NH}}_2<{\mathrm{NH}}_3<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_3\mathrm{N}<{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_2\mathrm{NH}$
3. C.${\mathrm{NH}}_2-{\mathrm{NH}}_2<{\mathrm{NH}}_3<{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_3\mathrm{N}<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_2\mathrm{NH}$
4. D.${\mathrm{NH}}_3<{\mathrm{H}}_2\mathrm{N}-{\mathrm{NH}}_2<{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_2\mathrm{NH}<({\mathrm{CH}}_3{\mathrm{CH}}_2{)}_3\mathrm{N}$

When a concentrated solution of sulphanilic acid and 1-naphthylamine is treated with nitrous acid $(273\mathrm{K})$ and acidified with acetic acid, the mass $(\mathrm{g})$ of 0.1 mole of product formed is : (Given molar mass in $\mathrm{g}\mathrm{mo}{\mathrm{l}}^{-1}$ $\mathrm{H}:1$, $\mathrm{C}:12$, $\mathrm{N}:14$, $\mathrm{O}:16$, $\mathrm{S}:32$ )

1. A.330
2. B.33
3. C.343
4. D.66

1. A.
2. B.
3. C.
4. D.

1. A.$\mathrm{A}{\mathrm{c}}_2\mathrm{O},\mathrm{B}{\mathrm{r}}_2,{\mathrm{H}}_2\mathrm{O}(\mathrm{\Delta }),\mathrm{NaOH}$
2. B.${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4,\mathrm{A}{\mathrm{c}}_2\mathrm{O},\mathrm{B}{\mathrm{r}}_2,{\mathrm{H}}_2\mathrm{O}(\mathrm{\Delta }),\mathrm{NaOH}$
3. C.$\mathrm{B}{\mathrm{r}}_2\mid \mathrm{FeB}{\mathrm{r}}_3,{\mathrm{H}}_2\mathrm{O}(\mathrm{\Delta }),\mathrm{NaOH}$
4. D.$\mathrm{A}{\mathrm{c}}_2\mathrm{O},{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4,\mathrm{B}{\mathrm{r}}_2,\mathrm{NaOH}$

1. A.(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
2. B.(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
3. C.(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
4. D.(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour change observed will be:

1. A.Pale Blue $\to$ Blue $\to$ Green $\to$ Violet
2. B.Pale Blue $\to$ Blue $\to$ Violet $\to$ Green
3. C.Green $\to$ Pale Blue $\to$ Blue $\to$ Violet
4. D.Violet $\to$ Blue $\to$ Pale Blue $\to$ Green

Number of compounds from the following which cannot undergo Friedel-Crafts reactions is: ____ toluene, nitrobenzene, xylene, cumene, aniline, chlorobenzene, $m$-nitroaniline, $m$-dinitrobenzene

1. A.Both Statement I and Statement II are incorrect.
2. B.Both Statement I and Statement II are correct.
3. C.Statement I is correct but Statement II is incorrect.
4. D.Statement I is incorrect but Statement II is correct.

If $279\mathrm{g}$ of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ____ g. (nearest integer) (consider complete conversion).