Amines & Nitrogen Compounds · JEE Main previous year questions

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) ${\mathrm{CH}}_3{\mathrm{NH}}_2$

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

Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion. Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product. In the light of the above statements, choose the most appropriate answer from the options given below :

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

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

Calamine and Malachite, respectively, are the ores of :

1. A.Nickel and Aluminium
2. B.Zinc and Copper
3. C.Copper and Iron
4. D.Aluminium and Zinc

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

Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines. Reason (R) : Aryl halides do not undergo nucleophilic substitution reaction. In the light of the above statements, choose the correct answer from the options given below :

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

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

When 10 mL of an aqueous solution of $\mathrm{F}{\mathrm{e}}^{2+}$ ions was titrated in the presence of dil ${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4$ using diphenylamine indicator, 15 mL of 0.02 M solution of ${\mathrm{K}}_2\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_7$ was required to get the end point. The molarity of the solution containing $\mathrm{F}{\mathrm{e}}^{2+}$ ions is $x\times 10^{-2}$ M. The value of x is ____. (Nearest integer)

Thiamine and pyridoxine are also known respectively as :

1. A.Vitamin ${\mathrm{B}}_2$ and Vitamin E
2. B.Vitamin E and Vitamin ${\mathrm{B}}_2$
3. C.Vitamin ${\mathrm{B}}_6$ and Vitamin ${\mathrm{B}}_2$
4. D.Vitamin ${\mathrm{B}}_1$ and Vitamin ${\mathrm{B}}_6$

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

Reagent, 1-napthylamine and sulphanilic acid in acetic acid is used for the detection of

1. A.${\mathrm{N}}_2\mathrm{O}$
2. B.$\mathrm{N}{\mathrm{O}}_3^{-}$
3. C.$\mathrm{NO}$
4. D.$\mathrm{N}{\mathrm{O}}_2^{-}$

A reaction of 0.1 mole of Benzylamine with bromomethane gave 23 g of Benzyl trimethyl ammonium bromide. The number of moles of bromomethane consumed in this reaction are $\mathrm{n}\times 10^{-1}$, when n = ____. (Round off to the Nearest Integer). [Given : Atomic masses : C : 12.0 u, H : 1.0 u, N : 14.0 u, Br : 80.0 u]

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

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

The functions of antihistamine are :

1. A.Antiallergic and Analgesic
2. B.Antacid and antialergic
3. C.Analgesic and antacid
4. D.Antiallergic and antidepressant

Given below are two statements : Statement I : A mixture of chloroform and aniline can be separated by simple distillation. Statement II : When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point. 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 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.
2. B.
3. C.
4. D.

$\mathrm{A}({\mathrm{C}}_4{\mathrm{H}}_8\mathrm{C}{\mathrm{l}}_2)\underset{\text{373 K}}{\overset{\text{Hydrolysis}}{\to }}\mathrm{B}({\mathrm{C}}_4{\mathrm{H}}_8\mathrm{O})$ B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B.

1. A.1, 1-Dichlorobutane and Butanal
2. B.2, 2-Dichlorobutane and Butan-2-one
3. C.1, 1-Dichlorobutane and 2-Butanone
4. D.2, 2-Dichlorobutane and Butanal

A. Phenyl methanamine B. N,N-Dimethylaniline C. N-Methyl aniline D. Benzenamine Choose the correct order of basic nature of the above amines.

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

Match List - I with List - II. | List - I | List - II | | :--- | :--- | | (a) Siderite | (i) Cu | | (b) Calamine | (ii) Ca | | (c) Malachite | (iii) Fe | | (d) Cryolite | (iv) Al | | | (v) Zn | Choose the correct answer from the options given below :

1. A.(a) $\to$ (i), (b) $\to$ (ii), (c) $\to$ (iii), (d) $\to$ (iv)
2. B.(a) $\to$ (iii), (b) $\to$ (i), (c) $\to$ (v), (d) $\to$ (ii)
3. C.(a) $\to$ (i), (b) $\to$ (ii), (c) $\to$ (v), (d) $\to$ (iii)
4. D.(a) $\to$ (iii), (b) $\to$ (v), (c) $\to$ (i), (d) $\to$ (iv)

1. A.$-\ddot{\mathrm{N}}{\mathrm{H}}_2$ group is ortho and para directive, so product (B) is not possible.
2. B.Reaction is possible and compound (B) will be the major product.
3. C.Reaction is possible and compound (A) will be major product.
4. D.The reaction will form sulphonated product instead of nitration.

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

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

Match the following : | Test/Method | Reagent | | :--- | :--- | | (i) Lucas Test | (a) ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{S}{\mathrm{O}}_2\mathrm{Cl}$/ aq. $\mathrm{KOH}$ | | (ii) Dumas method | (b) $\mathrm{HN}{\mathrm{O}}_3$/ $\mathrm{AgN}{\mathrm{O}}_3$ | | (iii) Kjeldahl's method | (c) $CuO/C{\mathrm{O}}_2$ | | (iv) Hinsberg test | (d) Conc. $\mathrm{HCl}$ and $\mathrm{ZnC}{\mathrm{l}}_2$ | | | (e) ${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4$ |

1. A.(i)-(b), (ii)-(d), (iii)-(e), (iv)-(a)
2. B.(i)-(d), (ii)-(c), (iii)-(e), (iv)-(a)
3. C.(i)-(b), (ii)-(a), (iii)-(c), (iv)-(d)
4. D.(i)-(d), (ii)-(c), (iii)-(b), (iv)-(e)