Which of the following compounds is formed, when n-hexane is heated at $500^{0} C$ and 10 - 20 atm in presence of $C r_{2} O_{3}$ ?

Cyclohexane

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Benzene

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2-Methyl pentane

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Cyclobutane

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Solution

The correct option is C Benzene
Aromatisation: Conversion of aliphatic compounds into aromatic compound is known as aromatisation. In this process $C r_{2} O_{3}$ is used as catalyst under high temperature and pressure.
$C H_{3} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{3} C r_{2} O_{3} a t 10 - 20 a t m - ---------- \to C_{6} H_{6}$

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Similar questions

When n - hexane is heated with $M o_{2} O_{3}$ at $500^{0} C$ and 20 atmospheres, the following changes takes place

A. Hybridisation of carbon changes B.No of C - C bonds increases

C. No of C - H bonds decreases D. Percentage of carbon increases

Compounds formed, when methyl amine is head with chloroform in the presence of KOH is:

When n - hexane is heated with $M o_{2} O_{3}$ at $500^{0} C$ and 20 atmospheres, the following changes takes place

A. Hybridisation of carbon changes B.No of C - C bonds increases

C. No of C - H bonds decreases D. Percentage of carbon increases

H_{2} O

F e_{2} O_{3} . C r_{2} O_{3}

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