Amines & Nitrogen Compounds · JEE Main previous year questions

2023 19 questions

1. Q742023 · 13 Apr 2023 · Shift 2

   Match List I with List II | LIST I | LIST II | | :--- | :--- | | A. Weak intermolecular forces of attraction | I. Hexamethylenediamine + adipic acid | | B. Hydrogen bonding | II. ${\mathrm{AlEt}}_3+{\mathrm{TiCl}}_4$ | | C. Heavily branched polymer | III. 2 - chloro - 1, 3 - butadiene | | D. High density polymer | IV. Phenol + formaldehyde | Choose the correct answer from the options given below:

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

   Answer: A

2. Q702023 · 11 Apr 2023 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
   Show answer

   Answer: B

3. Q702023 · 10 Apr 2023 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
   Show answer

   Answer: C

4. Q692023 · 8 Apr 2023 · Shift 2

   Match List I with List II $$\begin{array}{llll}& \text{LIST I}& & \text{LIST II}\\ & \text{Natural amino acid}& & \text{One letter code}\\ \text{A.}& \text{Glutamic acid}& \text{I.}& \mathrm{Q}\\ \text{B.}& \text{Glutamine}& \text{II.}& \mathrm{W}\\ \text{C.}& \text{Tyrosine}& \text{III.}& \mathrm{E}\\ \text{D.}& \text{Tryptophan}& \text{IV.}& \mathrm{Y}\end{array}$$ Choose the correct answer from the options given below:

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

   Answer: D

5. Q712023 · 6 Apr 2023 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
   Show answer

   Answer: B

6. Q752023 · 6 Apr 2023 · Shift 1

   Match List I with List II | LIST I (Vitamin) | LIST II (Deficiency disease) | | :--- | :--- | | A. Vitamin A | I. Beri-Beri | | B. Thiamine | II. Cheilosis | | C. Ascorbic acid | III. Xerophthalmia | | D. Riboflavin | IV. Scurvy | Choose the correct answer from the options given below:

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

   Answer: A

7. Q852023 · 6 Apr 2023 · Shift 1· Numerical answer

   Mass of Urea (${\text{NH}}_2{\text{CONH}}_2$) required to be dissolved in $1000\text{ g}$ of water in order to reduce the vapour pressure of water by $25\%$ is ________ g. (Nearest integer) Given: Molar mass of N, C, O and H are 14, 12, 16 and $1{\text{ g mol}}^{-1}$ respectively

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   Answer: 1111

8. Q842023 · 6 Apr 2023 · Shift 2· Numerical answer

   Number of isomeric aromatic amines with molecular formula ${\mathrm{C}}_8{\mathrm{H}}_{11}\mathrm{N}$, which can be synthesized by Gabriel Phthalimide synthesis is ___________.

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   Answer: 6

9. Q672023 · 1 Feb 2023 · Shift 1

   Match List I with List II | List I (Test) | List II (Functional group / Class of Compound) | | :--- | :--- | | A. Molisch's Test | I. Peptide | | B. Biuret Test | II. Carbohydrate | | C. Carbylamine Test | III. Primary amine | | D. Schiff's Test | IV. Aldehyde | Choose the correct answer from the options given below :

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

10. Q652023 · 31 Jan 2023 · Shift 1

    The correct order of basicity of oxides of vanadium is :

    1. A.${\mathrm{V}}_2{\mathrm{O}}_3>{\mathrm{V}}_2{\mathrm{O}}_5>{\mathrm{V}}_2{\mathrm{O}}_4$
    2. B.${\mathrm{V}}_2{\mathrm{O}}_3>{\mathrm{V}}_2{\mathrm{O}}_4>{\mathrm{V}}_2{\mathrm{O}}_5$
    3. C.${\mathrm{V}}_2{\mathrm{O}}_5>{\mathrm{V}}_2{\mathrm{O}}_4>{\mathrm{V}}_2{\mathrm{O}}_3$
    4. D.${\mathrm{V}}_2{\mathrm{O}}_4>{\mathrm{V}}_2{\mathrm{O}}_3>{\mathrm{V}}_2{\mathrm{O}}_5$
    Show answer

    Answer: B

11. Q872023 · 31 Jan 2023 · Shift 1· Numerical answer
    
    Show answer

    Answer: 3

12. Q622023 · 31 Jan 2023 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
    Show answer

    Answer: B

13. Q712023 · 30 Jan 2023 · Shift 1
    
    1. A.B and C
    2. B.A and D
    3. C.A and B
    4. D.Only B
    Show answer

    Answer: C

14. Q702023 · 29 Jan 2023 · Shift 1

    Chiral complex from the following is : Here en = ethylene diamine

    1. A.$\mathrm{cis}-[\mathrm{PtC}{\mathrm{l}}_2(\mathrm{en}{)}_2{]}^{2+}$
    2. B.$\mathrm{trans}-[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_4\mathrm{C}{\mathrm{l}}_2{]}^{+}$
    3. C.$\mathrm{trans}-[\mathrm{PtC}{\mathrm{l}}_2(\mathrm{en}{)}_2{]}^{2+}$
    4. D.$\mathrm{cis}-[\mathrm{PtC}{\mathrm{l}}_2(\mathrm{N}{\mathrm{H}}_3{)}_2]$
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    Answer: A

15. Q722023 · 25 Jan 2023 · Shift 1

    The correct order in aqueous medium of basic strength in case of methyl substituted amines is :

    1. A.$\mathrm{N}{\mathrm{H}}_3>\mathrm{M}{\mathrm{e}}_3\mathrm{N}>\mathrm{MeN}{\mathrm{H}}_2>\mathrm{M}{\mathrm{e}}_2\mathrm{NH}$
    2. B.$\mathrm{M}{\mathrm{e}}_3\mathrm{N}>\mathrm{M}{\mathrm{e}}_2\mathrm{NH}>\mathrm{MeN}{\mathrm{H}}_2>\mathrm{N}{\mathrm{H}}_3$
    3. C.$\mathrm{M}{\mathrm{e}}_2\mathrm{NH}>\mathrm{MeN}{\mathrm{H}}_2>\mathrm{M}{\mathrm{e}}_3\mathrm{N}>\mathrm{N}{\mathrm{H}}_3$
    4. D.$\mathrm{M}{\mathrm{e}}_2\mathrm{NH}>\mathrm{M}{\mathrm{e}}_3\mathrm{N}>\mathrm{MeN}{\mathrm{H}}_2>\mathrm{N}{\mathrm{H}}_3$
    Show answer

    Answer: C

16. Q632023 · 25 Jan 2023 · Shift 2

    Match List I with List II $$\begin{array}{llll}& \text{List I (Amines)}& & \text{List II }(\mathrm{p}{\mathrm{K}}_{\mathrm{b}})\\ \text{A.}& \text{Aniline}& \text{I.}& 3.25\\ \text{B.}& \text{Ethanamine}& \text{II.}& 3.00\\ \text{C.}& \text{N-Ethylethanamine}& \text{III.}& 9.38\\ \text{D.}& \text{N, N-Diethylethanamine}& \text{IV.}& 3.29\end{array}$$ Choose the correct answer from the options given below :

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

    Answer: C

17. Q672023 · 25 Jan 2023 · Shift 2

    Match List I with List II $$\begin{array}{llll}& \text{List I Isomeric pairs}& & \text{List II Type of isomers}\\ \text{A.}& \text{Propanamine and N-Methylethanamine}& \text{I.}& \text{Metamers}\\ \text{B.}& \text{Hexan-2-one and Hexan-3-one}& \text{II.}& \text{Positional isomers}\\ \text{C.}& \text{Ethanamide and Hydroxyethanimine}& \text{III.}& \text{Functional isomers}\\ \text{D.}& \text{o-nitrophenol and p-nitrophenol}& \text{IV.}& \text{Tautomers}\end{array}$$ Choose the correct answer from the options given below :

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

18. Q672023 · 24 Jan 2023 · Shift 2
    
    1. A.White
    2. B.Yellow
    3. C.Red
    4. D.Blue
    Show answer

    Answer: C

19. Q742023 · 24 Jan 2023 · Shift 2

    Given below are two statements: Statement I : Pure Aniline and other arylamines are usually colourless. Statement II : Arylamines get coloured on storage due to atmospheric reduction. In the light of the above statements, choose the most appropriate answer from the options given below :

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