NEET Test Series from KOTA - 10 Papers In MS WORD
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AMINES
278895 Correct statement about the given chemical reaction is :
1 $-\ddot{\mathrm{N}} \mathrm{H}_{2}$ group is ortho and para directive, so product $(\mathrm{B})$ is not possible.
2 Reaction is possible and compound (B) will be the major product.
3 The reaction will form sulphonated product instead of nitration
4 Reaction is possible and compound (A) will be major product.
Explanation:
Nitration:- Direct nitration of aniline yields tarry oxidation products in addition to the nitro derivatives. Moreover, in the strongly acidic medium, aniline is protonated to form the anilinium ion which is meta directing. That's why besides the ortho and para derivatives, significant amount of meta derivative is also formed.
JEE Main 25.02.2021 Shift-II
AMINES
278897
A $90 \mathrm{~g}$ of ethyl amine on reaction with methyl chloride produced a tertiary amine as an exclusive product. The amount of methyl chloride required is [Given mass in amu : $\mathrm{H}=1, \mathrm{C}=12, \mathrm{~N}=14, \mathrm{Cl}$ $=35.5$]
1 $50.5 \mathrm{~g}$
2 $101 \mathrm{~g}$
3 $202 \mathrm{~g}$
4 $303 \mathrm{~g}$
Explanation:
Molar mass of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=45$ Moles of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=\frac{90}{45}=2 \mathrm{~mol}$ Molar mass of $\mathrm{CH}_{3}-\mathrm{Cl}=50.5$ Amount of $\mathrm{CH}_{3} \mathrm{Cl}=$ Moles $\times$ Molar mass $\begin{aligned} & =4 \times 50.5 \\ & =202 \mathrm{~g} \end{aligned}$
TS-EAMCET (Engg.)
AMINES
278893
The major product of the following reaction sequence is
1
2
3
4
Explanation:
TS-EAMCET (Engg.)
AMINES
278921
Assertion: Aliphatic tertiary amine can be distinguished from aromatic tertiary amines. Reason: Aliphatic tertiary amines react with nitrous acid to form insoluble nitrites.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Hence, we can distinguish $3^{\circ}$ aliphatic and aromatic amine derivatives.
278895 Correct statement about the given chemical reaction is :
1 $-\ddot{\mathrm{N}} \mathrm{H}_{2}$ group is ortho and para directive, so product $(\mathrm{B})$ is not possible.
2 Reaction is possible and compound (B) will be the major product.
3 The reaction will form sulphonated product instead of nitration
4 Reaction is possible and compound (A) will be major product.
Explanation:
Nitration:- Direct nitration of aniline yields tarry oxidation products in addition to the nitro derivatives. Moreover, in the strongly acidic medium, aniline is protonated to form the anilinium ion which is meta directing. That's why besides the ortho and para derivatives, significant amount of meta derivative is also formed.
JEE Main 25.02.2021 Shift-II
AMINES
278897
A $90 \mathrm{~g}$ of ethyl amine on reaction with methyl chloride produced a tertiary amine as an exclusive product. The amount of methyl chloride required is [Given mass in amu : $\mathrm{H}=1, \mathrm{C}=12, \mathrm{~N}=14, \mathrm{Cl}$ $=35.5$]
1 $50.5 \mathrm{~g}$
2 $101 \mathrm{~g}$
3 $202 \mathrm{~g}$
4 $303 \mathrm{~g}$
Explanation:
Molar mass of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=45$ Moles of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=\frac{90}{45}=2 \mathrm{~mol}$ Molar mass of $\mathrm{CH}_{3}-\mathrm{Cl}=50.5$ Amount of $\mathrm{CH}_{3} \mathrm{Cl}=$ Moles $\times$ Molar mass $\begin{aligned} & =4 \times 50.5 \\ & =202 \mathrm{~g} \end{aligned}$
TS-EAMCET (Engg.)
AMINES
278893
The major product of the following reaction sequence is
1
2
3
4
Explanation:
TS-EAMCET (Engg.)
AMINES
278921
Assertion: Aliphatic tertiary amine can be distinguished from aromatic tertiary amines. Reason: Aliphatic tertiary amines react with nitrous acid to form insoluble nitrites.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Hence, we can distinguish $3^{\circ}$ aliphatic and aromatic amine derivatives.
278895 Correct statement about the given chemical reaction is :
1 $-\ddot{\mathrm{N}} \mathrm{H}_{2}$ group is ortho and para directive, so product $(\mathrm{B})$ is not possible.
2 Reaction is possible and compound (B) will be the major product.
3 The reaction will form sulphonated product instead of nitration
4 Reaction is possible and compound (A) will be major product.
Explanation:
Nitration:- Direct nitration of aniline yields tarry oxidation products in addition to the nitro derivatives. Moreover, in the strongly acidic medium, aniline is protonated to form the anilinium ion which is meta directing. That's why besides the ortho and para derivatives, significant amount of meta derivative is also formed.
JEE Main 25.02.2021 Shift-II
AMINES
278897
A $90 \mathrm{~g}$ of ethyl amine on reaction with methyl chloride produced a tertiary amine as an exclusive product. The amount of methyl chloride required is [Given mass in amu : $\mathrm{H}=1, \mathrm{C}=12, \mathrm{~N}=14, \mathrm{Cl}$ $=35.5$]
1 $50.5 \mathrm{~g}$
2 $101 \mathrm{~g}$
3 $202 \mathrm{~g}$
4 $303 \mathrm{~g}$
Explanation:
Molar mass of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=45$ Moles of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=\frac{90}{45}=2 \mathrm{~mol}$ Molar mass of $\mathrm{CH}_{3}-\mathrm{Cl}=50.5$ Amount of $\mathrm{CH}_{3} \mathrm{Cl}=$ Moles $\times$ Molar mass $\begin{aligned} & =4 \times 50.5 \\ & =202 \mathrm{~g} \end{aligned}$
TS-EAMCET (Engg.)
AMINES
278893
The major product of the following reaction sequence is
1
2
3
4
Explanation:
TS-EAMCET (Engg.)
AMINES
278921
Assertion: Aliphatic tertiary amine can be distinguished from aromatic tertiary amines. Reason: Aliphatic tertiary amines react with nitrous acid to form insoluble nitrites.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Hence, we can distinguish $3^{\circ}$ aliphatic and aromatic amine derivatives.
278895 Correct statement about the given chemical reaction is :
1 $-\ddot{\mathrm{N}} \mathrm{H}_{2}$ group is ortho and para directive, so product $(\mathrm{B})$ is not possible.
2 Reaction is possible and compound (B) will be the major product.
3 The reaction will form sulphonated product instead of nitration
4 Reaction is possible and compound (A) will be major product.
Explanation:
Nitration:- Direct nitration of aniline yields tarry oxidation products in addition to the nitro derivatives. Moreover, in the strongly acidic medium, aniline is protonated to form the anilinium ion which is meta directing. That's why besides the ortho and para derivatives, significant amount of meta derivative is also formed.
JEE Main 25.02.2021 Shift-II
AMINES
278897
A $90 \mathrm{~g}$ of ethyl amine on reaction with methyl chloride produced a tertiary amine as an exclusive product. The amount of methyl chloride required is [Given mass in amu : $\mathrm{H}=1, \mathrm{C}=12, \mathrm{~N}=14, \mathrm{Cl}$ $=35.5$]
1 $50.5 \mathrm{~g}$
2 $101 \mathrm{~g}$
3 $202 \mathrm{~g}$
4 $303 \mathrm{~g}$
Explanation:
Molar mass of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=45$ Moles of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}=\frac{90}{45}=2 \mathrm{~mol}$ Molar mass of $\mathrm{CH}_{3}-\mathrm{Cl}=50.5$ Amount of $\mathrm{CH}_{3} \mathrm{Cl}=$ Moles $\times$ Molar mass $\begin{aligned} & =4 \times 50.5 \\ & =202 \mathrm{~g} \end{aligned}$
TS-EAMCET (Engg.)
AMINES
278893
The major product of the following reaction sequence is
1
2
3
4
Explanation:
TS-EAMCET (Engg.)
AMINES
278921
Assertion: Aliphatic tertiary amine can be distinguished from aromatic tertiary amines. Reason: Aliphatic tertiary amines react with nitrous acid to form insoluble nitrites.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Hence, we can distinguish $3^{\circ}$ aliphatic and aromatic amine derivatives.
