Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80-100°C forms -

1. 1,2-Dinitrobenzene

2. 1,3-Dinitrobenzene

3. 1,4-Dinitrobenzene

4. 1,2,4-Trinitrobenzene

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 59%
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The reaction of toluene with Cl2 in the presence of FeCl3 gives 'X' and reaction in presence of light gives 'Y'. Thus, 'X' and  'Y' are

1. X = benzal chloride, Y= o-chlorotoluene

2. X = m-chlorotoluene, Y= p-chlorotoluene

3. X = o and p-chlorotoluene, Y = trichloromethyl benzene

4. X = benzal chloride, Y = m-chlorotoluene

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 78%
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RCOCl and AlCl3 are used in the Friedel-Crafts reaction.
The electrophile among the following is:

1. Cl+                                       

2. RCOCl

3. RC+O                                     

4. R+

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 70%
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The most reactive of these compounds towards sulphonation is

1. Toluene                         2. Chlorobenzene

3. Nitrobenzene                 4. m-Xylene

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
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HO (X) CH2=CH-PPh3Br (Y)

Product (Y) of the above reaction is:

1.   

2.  

3.  

4.  

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions | Aromatic Hydrocarbons - Reactions & Mechanism |
 55%
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For the given compounds, the correct order of rate of EASR (electrophilic aromatic substitution reaction) is:

1. 2.
3. 4.

1. c > b > a > d

2. c > d > a > b

3. a > b > c > d

4. c> d> b > a

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 74%
From NCERT
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Identify the position where E.A.S. can take place.
1. 1
2. 2
4. 3
4. 4

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions | Aromatic Hydrocarbons - Reactions & Mechanism |
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The rate of nitration will be:

(a) a>b>c

(b) a>c>b

(c) a=b=c

(d) c>a>b

 

Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions | Aromatic Hydrocarbons - Reactions & Mechanism |
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Product (B) in the above mentioned reaction is-

1. 2.
3. 4.
Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 66%
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The compound among the following that undergoes bromination of its aromatic ring

(electrophilic aromatic substitution) at the fastest rate is-

1. 2.
3. 4.
Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 53%
From NCERT
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