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12 grade chemistry others

Chlorobenzene is prepared commercially by

Aniket Singh

1 Year agoGrade

1 Answer

Askiitians Tutor Team

1 Year ago

Chlorobenzene is prepared commercially through a process known as chlorination. There are several methods for producing chlorobenzene, but one of the most common industrial methods is the direct chlorination of benzene. Here is a general overview of the process:

Feedstock preparation: Benzene, which is derived from petroleum or other sources, is usually the starting material. It undergoes purification to remove impurities that may interfere with the chlorination process.

Chlorination reaction: The purified benzene is then mixed with chlorine gas (Cl2) in the presence of a catalyst, typically an iron or iron(III) chloride catalyst. The reaction occurs at elevated temperatures (usually around 300-400°C) and is typically carried out in the liquid or vapor phase.

The chlorination reaction can be represented by the following equation:
C6H6 + Cl2 -> C6H5Cl + HCl

In this reaction, one chlorine atom replaces one of the hydrogen atoms in benzene to form chlorobenzene, along with the production of hydrogen chloride (HCl) as a byproduct.

Separation and purification: After the chlorination reaction, the mixture is cooled and undergoes several separation and purification steps. These steps may include distillation, extraction, and other techniques to separate chlorobenzene from the reaction mixture and remove impurities.

Further processing: The obtained chlorobenzene can be further processed for various applications. It is commonly used as an intermediate in the production of other chemicals, such as pesticides, dyes, and pharmaceuticals.

It's important to note that industrial processes may vary, and there might be alternative methods or variations used for the commercial production of chlorobenzene. However, the general principles outlined above provide a typical overview of the process.

is Pradeep Chemistry+Ncert sufficient for all of the theory of Jee Mains Chemistry?

Hi, I’m a self-study JEE 2027 aspirant with a large 11th backlog. Since I don’t think 6–8 hour one-shots are sufficient to cover the full theory + breadth of problem types of a JEE chapter, I’ve shifted from lecture-based preparation to book-based self-study.

I have a problem with using NCERT as my primary chemistry source. In my experience, it is concise and information-heavy, but often lacks detailed explanations, systematic organisation of concepts, and categorisation of problem types. This seems especially problematic for Physical and Organic Chemistry, where I feel that simply reading NCERT may not give enough depth or problem-solving preparation.

So I’m considering this approach:

Pradeep Chemistry → complete the chapter thoroughly from Pradeep → then read NCERT for that chapter → solve JEE Main PYQs/problems.

My main question is:

Is Pradeep + NCERT sufficient as the complete theory source for JEE Main-level Chemistry?

In other words, after thoroughly completing a chapter from Pradeep and then NCERT, can I consider the theory part of that chapter complete for JEE Main, with only PYQs/problem practice remaining?

I’m asking specifically about JEE Main level, not Advanced.

Also, if Pradeep is not sufficient, what specific gap does it leave, and what would you recommend as a better book-based alternative for self-study?

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