List of top Chemistry Questions on Aromatic Hydrocarbon

Name the reagent used in the conversion of benzene to nitrobenzene.

Consider the following sequence of reactions:



The major product $P$ is:

Which of the following are aromatic? 

Give plausible explanation for: 
(a) Diazonium salts of aromatic amines are stable.
(b) Aniline does not undergo Friedel-Crafts reaction. 
(c) Aniline on nitration gives substantial meta product.

Aniline readily reacts with bromine water to give 2, 4, 6-tribromoaniline.

Match List I with List II

List-IReactionList-IIReagents
(A)Hoffmann Degradation(I)Conc.KOH,\(\triangle\)
(B)Clemenson reduction(II)CHCl3, NaOH/H3O+
(C)Cannizaro reaction(III)Br2, NaOH
(D)Reimer-Tiemann Reaction(IV)Zn-Hg/HCl

Choose the correct answer from the option given below:

Chiral complex from the following is 

 

Given below are two statements: one is labelled as Assertion A and, the other is labelled as Reason R.
Assertion A: [6] Annulene, [8] Annulene and cis-[10] Annulene, are respectively aromatic, not-aromatic and aromatic.
Reason R: Planarity is one, of the requirements of aromatic systems.
In the light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with List-II
List I and List II
In the presence of sunlight, benzene reacts with CI2 to give product X. The number of hydrogens in X is _________.
Which of the following is most stable?
\( C_6H_6 \xrightarrow{350 \, K, \, H_2SO_4} A \xrightarrow{\text{Alkali Fusion}} B \xrightarrow{\text{Br}_2/\text{H}_2O} C \). In the above sequence, C is ________.
o-toluic acid on reaction with $Br₂$ + Fe gives ________.
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Experimental reaction of $CH _3 Cl$ with aniline and anhydrous $AlCl _3$ does not give $o$ and p-methylaniline.
Reason (R) : The $- NH _2$ group of aniline becomes deactivating because of salt formation with anhydrous $AlCl _3$ and hence yields $m$-methyl aniline as the product.
In the light of the above statements, choose the most appropriate answer from the options given below :
Which of the following will not give Lassaigne's test?
Which of the following are aromatic compounds?
aromatic compounds
For the reaction:
Gattermann–Koch reaction
Product (P) is
What are the necessary conditions for any system to be aromatic?
Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example
Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?
How would you convert the following compounds into benzene? 
  1. Ethyne
  2. Ethene
  3. Hexane
Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E+
  1. Chlorobenzene, 2,4-dinitrochlorobenzene, p-nitrochlorobenzene 
  2. Toluene, p-H3C-C6H4-NO2, p-O2N-C6H4-NO2.
Out of benzene, m-dinitrobenzene and toluene which will undergo nitration most easily and why?
Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during ethylation of benzene.
Explain why the following systems are not aromatic?
Explain why the following systems are not aromatic