Amines & Nitrogen Compounds · JEE Main previous year questions

2022 15 questions

1. Q862022 · 29 Jul 2022 · Shift 1· Numerical answer

   The reaction between X and Y is first order with respect to X and zero order with respect to Y. | Experiment | $\frac{[X]}{\mathrm{mol}{\mathrm{L}}^{-1}}$ | $\frac{[Y]}{\mathrm{mol}{\mathrm{L}}^{-1}}$ | $\frac{Initialrate}{\mathrm{mol}{\mathrm{L}}^{-1}\mathrm{mi}{\mathrm{n}}^{-1}}$ | | :--- | :--- | :--- | :--- | | I | 0.1 | 0.1 | $2\times 10^{-3}$ | | II | L | 0.2 | $4\times 10^{-3}$ | | III | 0.4 | 0.4 | $M\times 10^{-3}$ | | IV | 0.1 | 0.2 | $2\times 10^{-3}$ | Examine the data of table and calculate ratio of numerical values of M and L. (Nearest Integer)

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   Answer: 40

2. Q672022 · 29 Jul 2022 · Shift 2

   Octahedral complexes of copper(II) undergo structural distortion (Jahn-Teller). Which one of the given copper (II) complexes will show the maximum structural distortion? (en - ethylenediamine; ${\mathrm{H}}_2\mathrm{N}-\mathrm{C}{\mathrm{H}}_2-\mathrm{C}{\mathrm{H}}_2-\mathrm{N}{\mathrm{H}}_2$)

   1. A.$[\mathrm{Cu}({\mathrm{H}}_2\mathrm{O}{)}_6]\mathrm{S}{\mathrm{O}}_4$
   2. B.$[\mathrm{Cu}(\mathrm{en})({\mathrm{H}}_2\mathrm{O}{)}_4]\mathrm{S}{\mathrm{O}}_4$
   3. C.$\text{cis-}[\mathrm{Cu}(\mathrm{en}{)}_2\mathrm{C}{\mathrm{l}}_2]$
   4. D.$\text{trans-}[\mathrm{Cu}(\mathrm{en}{)}_2\mathrm{C}{\mathrm{l}}_2]$
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   Answer: A

3. Q722022 · 29 Jul 2022 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: A

4. Q702022 · 28 Jul 2022 · Shift 2

   Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Aniline on nitration yields ortho, meta & para nitro derivatives of aniline. Reason R : Nitrating mixture is a strong acidic mixture. In the light of the above statements, choose the correct answer from the options given below

   1. A.Both A and R are true and R is the correct explanation of A
   2. B.Both A and R are true but R is NOT the correct explanation of A
   3. C.A is true but R is false
   4. D.A is false but R is true
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   Answer: A

5. Q722022 · 27 Jul 2022 · Shift 1

   Match List I with List II. | List I | | List II | | :--- | :--- | :--- | | (A) Benzenesulphonyl chloride | (I) | Test for primary amines | | (B) Hoffmann bromamide reaction | (II) | Anti Saytzeff | | (C) Carbylamine reaction | (III) | Hinsberg reagent | | (D) Hoffmann orientation | (IV) | Known reaction of Isocyanates. | Choose the correct answer from the options given below:

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

6. Q732022 · 27 Jul 2022 · Shift 2

   Match List - I with List - II. $$\begin{array}{llll}& \begin{array}{l}\text{List - I}\\ \text{(Mixture)}\end{array}& & \begin{array}{l}\text{List - II}\\ \text{(Purification Process)}\end{array}\\ \text{(A)}& \text{Chloroform \& Aniline}& \text{(I)}& \text{Steam distillation}\\ \text{(B)}& \text{Benzoic acid \& Naphthalene}& \text{(II)}& \text{Sublimation}\\ \text{(C)}& \text{Water \& Aniline}& \text{(III)}& \text{Distillation}\\ \text{(D)}& \text{Naphthalene \& Sodium chloride}& \text{(IV)}& \text{Crystallisation}\end{array}$$ Choose the correct answer from the options given below :

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

7. Q892022 · 27 Jul 2022 · Shift 2· Numerical answer

   Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores of iron is _____________.

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   Answer: 4

8. Q732022 · 26 Jul 2022 · Shift 1
   
   1. A.$(\mathrm{A})>(\mathrm{B})>(\mathrm{C})>(\mathrm{D})$
   2. B.$(\mathrm{A})>(\mathrm{C})>(\mathrm{D})>(\mathrm{B})$
   3. C.$(\mathrm{C})>(\mathrm{A})>(\mathrm{D})>(\mathrm{B})$
   4. D.$(\mathrm{C})>(\mathrm{D})>(\mathrm{B})>(\mathrm{A})$
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   Answer: B

9. Q752022 · 26 Jul 2022 · Shift 1

   Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Experimental reaction of $\mathrm{C}{\mathrm{H}}_3\mathrm{Cl}$ with aniline and anhydrous $\mathrm{AlC}{\mathrm{l}}_3$ does not give $o$ and $p$-methylaniline. Reason (R): The $-\mathrm{N}{\mathrm{H}}_2$ group of aniline becomes deactivating because of salt formation with anhydrous $\mathrm{AlC}{\mathrm{l}}_3$ and hence yields $m$-methyl aniline as the product. In the light of the above statements, choose the most appropriate answer from the options given below :

   1. A.Both A and R are true and (R) is the correct explanation of (A).
   2. B.Both A and R are true but (R) is not the correct explanation of (A).
   3. C.(A) is true, but (R) is false.
   4. D.(A) is false, but (R) is true.
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   Answer: C

10. Q652022 · 28 Jun 2022 · Shift 2

    Match List - I with List - II : $$\begin{array}{llll}& \text{List-I (Oxide)}& & \text{List-II (Nature)}\\ \text{(A)}& \mathrm{C}{\mathrm{l}}_2{\mathrm{O}}_7& \text{(I)}& \text{Amphoteric}\\ \text{(B)}& \mathrm{N}{\mathrm{a}}_2\mathrm{O}& \text{(II)}& \text{Basic}\\ \text{(C)}& \mathrm{A}{\mathrm{l}}_2{\mathrm{O}}_3& \text{(III)}& \text{Neutral}\\ \text{(D)}& {\mathrm{N}}_2\mathrm{O}& \text{(IV)}& \text{Acidic}\end{array}$$ Choose the correct answer from the options given below :

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

11. Q712022 · 28 Jun 2022 · Shift 2
    
    1. A.(A) and (C) are correct statements.
    2. B.(A) and (D) are correct statements.
    3. C.(B) and (D) are correct statements.
    4. D.(B) and (C) are correct statements.
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    Answer: C

12. Q702022 · 26 Jun 2022 · Shift 1
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: C

13. Q752022 · 25 Jun 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: C

14. Q872022 · 25 Jun 2022 · Shift 2· Numerical answer

    The neutralization occurs when $10\mathrm{mL}$ of $0.1\mathrm{M}$ acid 'A' is allowed to react with $30\mathrm{mL}$ of $0.05\mathrm{M}$ base $\mathrm{M}(\mathrm{OH}{)}_2$. The basicity of the acid 'A' is ____. [M is a metal]

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    Answer: 3

15. Q732022 · 24 Jun 2022 · Shift 2

    The conversion of propan-1-ol to n-butylamine involves the sequential addition of reagents. The correct sequential order of reagents is

    1. A.(i) ${\mathrm{SOCl}}_2$ (ii) $\mathrm{KCN}$ (iii) ${\mathrm{H}}_2/\mathrm{Ni},\mathrm{Na}(\mathrm{Hg})/{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$
    2. B.(i) $\mathrm{HCl}$ (ii) ${\mathrm{H}}_2/\mathrm{Ni},\mathrm{Na}(\mathrm{Hg})/{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$
    3. C.(i) ${\mathrm{SOCl}}_2$ (ii) $\mathrm{KCN}$ (iii) ${\mathrm{CH}}_3{\mathrm{NH}}_2$
    4. D.(i) $\mathrm{HCl}$ (ii) ${\mathrm{CH}}_3{\mathrm{NH}}_2$
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    Answer: A