Which of the following compounds is anti-aromatic?

1.		2.
3.		4.

Which of the following compounds gives the maximum percentage of meta-substituted
product upon nitration with concentrated HNO₃/H₂SO₄?

1. Toluene

2. Aniline

3. Benzene

4. Isopropylbenzene

What is the role of AlCl₃ in a Friedel-Crafts reaction?

1. Absorbs HCl
2. Releases HCl
3. Generates an electrophile
4. Generates a nucleophile

n-Butylbenzene on oxidation with hot alkaline KMnO₄ gives:

Which of the following compounds undergoes bromination of its aromatic ring (electrophilic aromatic substitution) at the fastest rate?

1.		2.
3.		4.

1. ${\mathrm{Cl}}^{\oplus }$

2. Cl^-

3. Cl

4. Cl²⁺

(A) C₈H₁₀ $\stackrel{{\mathrm{KMnO}}_4}{\to }$ (B)  C₈H₆O₄$\underset{\mathrm{Fe}}{\overset{{\mathrm{Br}}_2}{\to }}$  C₈H₅BrO₄  (C)  (one-product only)

The structure of A in the above-mentioned reaction is:

1.		2.
3.		4.

The product (B) in the above-mentioned reaction is:

1.		2.
3.		4.

Cyclopentadiene is much more acidic than cyclopentane, because:

 The compounds among the following that can be generated by Friedel craft acylation is/are:

I.
II.
III.
IV.