278804
In the following reaction sequence,
the major product is :
1
2
3
4
Explanation:
In step because of protection of aniline only monobromination occurs.
JEE Main 2020
AMINES
278805
What will be the product in the reaction given below ?
1
2
3
4
Explanation:
Ortho para-directing for electrophilic substitution as para is blocked by will come at ortho w.r.t.
AP EAMCET (Engg.) 18.09.2020 Shift-I
AMINES
278808
The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is
(A) (B) (C) (D)
1 (A) (C) (D) (B)
2 (B) (A) (C) (D)
3 (B) (A) (D) (C)
4 (A) (B) (C) (D)
Explanation:
Rate of electrophilic substitution reaction depends on the nucleophilicity of benzene derivatives i.e., In case of (C) and (D) compound, (D) shows effect greater than (C) because (C) also contains effect so its nucleophilicity decreases therefore, rate of alkyl halide in is decreases.
Rate :- In case of (A) and (B), (B) contains more containing group then rate in (B) is lesser than (A)
Rate :- Overall Rate of alkyl halide substitution reaction is
JEE Main 2019
AMINES
278811
Assertion: Benzylamine is more basic than ethylamine Reason: Benzene shows + I effect.
1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason 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:
In case of benzylamine, benzene shows - I effect where as in ethylamine, ethyl group shows effect. effect increases basic strength increases. Hence, ethylamine is more basic than benzylamine.
278804
In the following reaction sequence,
the major product is :
1
2
3
4
Explanation:
In step because of protection of aniline only monobromination occurs.
JEE Main 2020
AMINES
278805
What will be the product in the reaction given below ?
1
2
3
4
Explanation:
Ortho para-directing for electrophilic substitution as para is blocked by will come at ortho w.r.t.
AP EAMCET (Engg.) 18.09.2020 Shift-I
AMINES
278808
The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is
(A) (B) (C) (D)
1 (A) (C) (D) (B)
2 (B) (A) (C) (D)
3 (B) (A) (D) (C)
4 (A) (B) (C) (D)
Explanation:
Rate of electrophilic substitution reaction depends on the nucleophilicity of benzene derivatives i.e., In case of (C) and (D) compound, (D) shows effect greater than (C) because (C) also contains effect so its nucleophilicity decreases therefore, rate of alkyl halide in is decreases.
Rate :- In case of (A) and (B), (B) contains more containing group then rate in (B) is lesser than (A)
Rate :- Overall Rate of alkyl halide substitution reaction is
JEE Main 2019
AMINES
278811
Assertion: Benzylamine is more basic than ethylamine Reason: Benzene shows + I effect.
1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason 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:
In case of benzylamine, benzene shows - I effect where as in ethylamine, ethyl group shows effect. effect increases basic strength increases. Hence, ethylamine is more basic than benzylamine.
278804
In the following reaction sequence,
the major product is :
1
2
3
4
Explanation:
In step because of protection of aniline only monobromination occurs.
JEE Main 2020
AMINES
278805
What will be the product in the reaction given below ?
1
2
3
4
Explanation:
Ortho para-directing for electrophilic substitution as para is blocked by will come at ortho w.r.t.
AP EAMCET (Engg.) 18.09.2020 Shift-I
AMINES
278808
The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is
(A) (B) (C) (D)
1 (A) (C) (D) (B)
2 (B) (A) (C) (D)
3 (B) (A) (D) (C)
4 (A) (B) (C) (D)
Explanation:
Rate of electrophilic substitution reaction depends on the nucleophilicity of benzene derivatives i.e., In case of (C) and (D) compound, (D) shows effect greater than (C) because (C) also contains effect so its nucleophilicity decreases therefore, rate of alkyl halide in is decreases.
Rate :- In case of (A) and (B), (B) contains more containing group then rate in (B) is lesser than (A)
Rate :- Overall Rate of alkyl halide substitution reaction is
JEE Main 2019
AMINES
278811
Assertion: Benzylamine is more basic than ethylamine Reason: Benzene shows + I effect.
1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason 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:
In case of benzylamine, benzene shows - I effect where as in ethylamine, ethyl group shows effect. effect increases basic strength increases. Hence, ethylamine is more basic than benzylamine.
NEET Test Series from KOTA - 10 Papers In MS WORD
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AMINES
278804
In the following reaction sequence,
the major product is :
1
2
3
4
Explanation:
In step because of protection of aniline only monobromination occurs.
JEE Main 2020
AMINES
278805
What will be the product in the reaction given below ?
1
2
3
4
Explanation:
Ortho para-directing for electrophilic substitution as para is blocked by will come at ortho w.r.t.
AP EAMCET (Engg.) 18.09.2020 Shift-I
AMINES
278808
The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is
(A) (B) (C) (D)
1 (A) (C) (D) (B)
2 (B) (A) (C) (D)
3 (B) (A) (D) (C)
4 (A) (B) (C) (D)
Explanation:
Rate of electrophilic substitution reaction depends on the nucleophilicity of benzene derivatives i.e., In case of (C) and (D) compound, (D) shows effect greater than (C) because (C) also contains effect so its nucleophilicity decreases therefore, rate of alkyl halide in is decreases.
Rate :- In case of (A) and (B), (B) contains more containing group then rate in (B) is lesser than (A)
Rate :- Overall Rate of alkyl halide substitution reaction is
JEE Main 2019
AMINES
278811
Assertion: Benzylamine is more basic than ethylamine Reason: Benzene shows + I effect.
1 If both Assertion and Reason are correct and the Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason 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:
In case of benzylamine, benzene shows - I effect where as in ethylamine, ethyl group shows effect. effect increases basic strength increases. Hence, ethylamine is more basic than benzylamine.
