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'A' and 'B' in the following reactions are:
 

A B A B
1.      2.
3. 4.

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 65%
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In the given chemical reactions, 
 

The compounds 'A' and 'B' respectively are: 

1. Nitrobenzene and Chlorobenzene

2. Nitrobenzene and Fluorobenzene

3. Phenol and Benzene

4. Benzene diazonium chloride and Fluorobenzene

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 94%
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The reagent 'R' in the given sequence of a chemical reaction is : 

1. HI 2. CuCN/KCN
3. H2O 4. CH3CH2OH
Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 57%
From NCERT
NEET - 2021
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Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.

1. 2.
3. 4.
Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 80%
From NCERT
NEET - 2021
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D is N-methyl aniline in the given below sequence of reaction:
\(\text A\xrightarrow{\bf\text{ reduction }}\text B\xrightarrow{\bf\text {CHCl}_3\text{/KOH}}\text C\xrightarrow{\bf\text{ reduction }}\text D\)

Structure of A can be:

1.   2.
3.  
\(\mathrm{CH_3NH_2 }\)
4.
Subtopic:  Amines - Preparation & Properties |
 70%
From NCERT
AIPMT - 2000
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Match the compounds given in column I with their respective classified amine given in column II and mark the correct option.
Column I Column II
a. i. Primary amine
b. ii. Secondary amine
c. \(\mathrm{(C_2H_5)_2CHNH_2}\) iii. Tertiary amine
d. \(\mathrm{(C_2H_5)_2NH}\)


1. a-iii; b-iii; c-i; d-ii
2. a-ii; b-iii c-i; d-ii
3. a-i; b-iii c-i; d-ii
4. a-ii; b-i c-i; d-ii

Subtopic:  Amines - Preparation & Properties |
 87%
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The total number of different isomers corresponding to the molecular formula, C3H9N is:

1.  5
2.  6
3.  4
4.  3
Subtopic:  Amines - Preparation & Properties |
 67%
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A compound "A", when reacted with PCl5 and then with ammonia, gives "B". "B" on treatment with bromine and caustic potash produces "C". "C" on treatment with NaNO2 and HCl at C and then boiling produces ortho-cresol. Compound "A" is:

1. o-Toluic acid

2. o-Chlorotoluene

3. o-Bromotoluene

4. m-Toluic acid

Subtopic:  Amines - Preparation & Properties |
 73%
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The reaction of propanamide with ethanolic sodium hydroxide and bromine will give:

1. Ethylamine 2. Methylamine
3. Propylamine 4. Aniline
Subtopic:  Amines - Preparation & Properties |
 74%
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NEET - 2020
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Select the correct option based on statements below:

Assertion (A): Only a small amount of HCI is required in the reduction of nitro compounds with iron scrap and HCI in the presence of steam.
Reason (R): FeCl2 formed gets hydrolyzed to release HCI during the reaction.
  
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Amines - Preparation & Properties |
 87%
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