An Overview of Chapter 11 - Alcohols, Phenols and Ethers of Class 12 Chemistry
FAQs on NCERT Books Free Download for Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers
1. Do I need to practise all the questions provided in NCERT Books Free Download for Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers?
Yes, it is necessary to practice all the questions provided in NCERT Books Free Download for Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers.
You can choose the questions you wish to practice based on your requirements. There are many NCERT books available for the students of Class 12 for each subject for the students to prepare for their Board Exams.
But remember the objective of these questions is to help you practice and improve your overall concepts of NCERT Book for Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers. There have been multiple attempts to make free NCERT Notes available online in the recent past, but all of those were shut down & withdrawn very quickly. And the only reason was that NCERT itself didn't want to give up their profits from the sale of their own books & learning material.
2. How is Phenol prepared according to Chapter 11 of Class 12 Chemistry?
Phenol is produced naturally in plants such as grapes, apples, and raisins, and it can also be made synthetically using a series of chemical processes involving the addition of hydrogen, carbon dioxide, and other ingredients.
Phenol has been known for almost 200 years. Its use in leather making dates back to 1880 when a Frenchman named Auguste Escoffier mixed phenol with oils from rapeseed and Eucalyptus to make the specialized Plasticizer Phenol Ether. In the modern-day, producing Phenol for the textile industry is now gaining heights. To know more, sign up on the Vedantu app.
3. How do I understand Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers?
Alcohols and phenols are examples of hydroxyl (-OH) compounds. They are oxidized by an acidic solution, often Pyridinium Chlorochromate (PCC), into Aldehydes, Carboxylic Acids or Ketones, and Phenols to give products with an identifiable or characteristic Chromophore. For example, the oxidation of Ethanol to Acetone or Phenol to Cresol is commonly used as a diagnostic test for PCC. Ethanol is oxidized to Acetaldehyde and Phenol is oxidized to Cresol. The oxidation products depend on the acid catalyst and the temperature of the reaction.
4. What is the structural formula of Phenol as discussed in Chapter 11 of Class 12 Chemistry NCERT book?
Structural Formula: -R-OH and for the (R) group compounds containing –CH3, –CH2-CH3, –CH=CH2, etc are called primary alcohols. So when compared to primary alcohols, the secondary alcohol structure contains a higher number of atoms. The presence of the -OH group makes them acidic in nature, so they can be protonated. Thus, they are called phenols. Phenol, otherwise known as carbolic acid, was first derived in the early 19th century from coal tar.
But, in modern times, phenol is produced commercially in factories and that also in a synthetic manner. In the laboratory, phenols are prepared from benzene derivatives by using any of the following methods:
From haloarenes
From benzene sulphonic acid
From diazonium salts
From cumene
You can download the free study materials from the Vedantu site and app.
5. What is the significance of using NCERT Books for Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers?
With the ease of language, students can learn concepts from NCERT books in less time than usual as compared with other books. Thus, it saves a lot of time. NCERT books are written in very easy language. It describes complex concepts in a very lucid way because the pattern of the answers is short and simple. The answers involve only the key points of the topics, thereby not burdening the students to learn big answers.
The free study materials for Class 12 Chemistry Chapter 11 - Alcohols, Phenols, and Ethers can be downloaded from the Vedantu site and app.