Question

In this reaction, $(A)$ is:
${C_6}{H_5}Cl\xrightarrow{{Ni - Al/NaOH}}(A)$ .
A.phenol
B.sodium phenoxide
C.benzol
D.benzene

Answer 1

Hint:
Among organic compounds, benzene is the popular one. It has a ring-like structure that has six carbon and hydrogen atoms. It is an aromatic hydrocarbon that is mostly found in crude oil. Its name dates to the 16th century.

Complete answer:
Here, we will discuss ${C_6}{H_5}Cl$.
It is chlorobenzene that is an aromatic organic compound. It is colorless and flammable. It was first prepared in 1851 when chlorination of benzene happened in the presence of Lewis acid. It easily reacts with water, ammonia, and displaces chlorine atoms. It also reacts with sulfuric acid, nitric acid, chlorine, and forms chloronitrobenzene, dichlorobenzene.
Now, in this given reaction reduction will happen in the presence of $Ni - Al/NaOH$ . And it gives benzene as a product.
${C_6}{H_5}Cl\xrightarrow{{Ni - Al/NaOH}}{C_6}{H_6}$
In this reaction $C - Cl$ bond is replaced with $C - H$ bond. So, we got $(A)$ is benzene.
Uses of Chlorobenzene
-It is used in the laboratory as well as in the industry.
-It is also used to manufacture pesticides like DDT, phenol.
-Well, DDT is rarely used. So phenol is manufactured.
Example - ${C_6}{H_5}Cl + NaOH \to {C_6}{H_5}OH + NaCl$
Hence the correct answer is option D.

Note:Aromatic compound - It is a type of chemical compound that contains rings with pi-electrons. Lewis acid - It contains an empty orbital which is able to accept an electron pair. Benzene has a pi bond. pi bond- It is a covalent bond where two lobes of an orbital overlap on others. Covalent bond- Sharing of electrons between atoms. Due to sharing, electron atoms come in a stable state. Chlorobenzene is also found in sedimentary rock on Mars.