Aromatization

Q.

n- Octane in the presence of Cr₂O₃/Al₂O₃ at 873K changes to

1. 1, 2-Dimethylcyclohexane

2. 1, 2 - Dimethylcyclohex-1-ene

3. 1, 2- Dimethylcyclohexa-1, 3-diene

4. O-xylene

Q. Name the hydrocarbon which when heated to a temperature of about 773 K under high pressure in the presence of $C{r}_2{O}_3/A{l}_2{O}_3$ catalyst gives benzene.

1. n-pentane
2. n-hexane
3. n-pentane
4. n-octane

Q. Which of the following is the smallest aromatic species?

1. Cyclopropene
2. Cyclopropenyl cation
3. Cyclopropenyl anion
4. Cyclobutadiene

Q. The product obtained when n-heptane is heated to a temperature of about 773 K under high pressure in the presence of $C{r}_2{O}_3/A{l}_2{O}_3$ catalyst is:

1. 1, 2-dimethylbenzene
2. Ethylbenzene
3. Benzene
4. Toluene