Alcohol phenol and ether class 12 exercise

Alcohols are chemical compounds in which a hydroxyl group replaces the hydrogen atom of an aliphatic carbon. As a result, an alcohol molecule is made up of two components. The first has an alkyl group, while the second has a hydroxyl group. They feature a unique set of physical and chemical properties and have a sweet odor. The existence of a hydroxyl group is the most important aspect in defining an alcohol's characteristics. Alcohol are derivatives of hydrocarbons whose functional group is -OH as -OH has replaced a hydrogen atom. Depending on the presence of hydroxyl groups in the compound there are different types of alcohol i.e primary alcohol, secondary alcohol, tertiary alcohol. Functional group of alcohol is known as -OH( Hydroxyl group). Nature of alcohol is mainly covalent in nature as the -OH group is attached to the carbon by covalent bond. Ethyl alcohol is considered as primary alcohol or one of the main alcohol and ethyl alcohol is also considered as ethanol. General formula of alcohol is C n H 2n + 1OH. Physical Properties of Alcohol • The Boiling Point of Alcohols Alcohols have higher boiling points than other hydrocarbons with equivalent molecular weights. This is responsible for the formation of intermolecular hydrogen bonds between the hydroxyl groups of alcohol molecules. Furthermore, as the number of carbon atoms in the aliphatic carbon chain grows, the boiling point of alcohol rises. Boiling points of alcohol are generally higher when compared to other...

NCERT Solutions Class 12 Chemistry Chapter 11 Alcohols, Phenols, and Ethers have discussed important topics such as alcohols, phenols, and other related chemicals. NCERT Solutions is perfectly articulated by the experts on the subject. NCERT Solutions Class 12 is the one-stop solution for all kinds of queries one might face. • Alcohols – such organic chemical compounds which have at least one hydroxyl functional group (-OH) are bound to the main carbon atom. Alcohol is originally referred to as alcohol such as the primary alcohol or the ethanol (ethyl alcohol). This is the main ingredient used in medicines and other alcoholic drinks. In the category of alcohol, the simplest alcohols are the methanols and ethanols. • Phenols – such class of organic compound in which the hydroxyl group is attached to the benzene ring. The simplest of this chemical is known as phenol. Phenols are often used in the production of resins and nylons. The phenolic compounds are further divided into phenols or polyphenols according to several phenol units attached to the molecule. • Ethers – in ethers there are different organic compounds attached to them. These are organic compounds or oxygen atom which is connected to two alkyl or the aryl groups. These ethers have a general formula of R-O-R’, in this, the R represents the alkyl group and the R’ represents the aryl group. • Nomenclature – IUPAC has proposed the rules which govern the naming of all kinds of chemical compounds which we find in our ...

We have compiled the NCERT MCQ Questions for Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers with Answers Pdf free download covering the entire syllabus. Practice Alcohols, Phenols and Ethers Class 12 MCQs Questions with Answers Question 1. Among the following compounds, strongest acid is (a) H-C = C-H (b) C 6H 6 (c) C 2H 6 (d) CH 3OH Answer Answer: (d) CH 3OH Question 2. 1-Propanol and 2-propanol can be best distinguished by (a) Oxidation with KMnO 4 followed by reaction with Fehling solution? (b) Oxidation with acidic dichromate followed by reaction with Fehling solution. (c) Oxidation by heating with copper followed by reaction with Fehling solution. (d) Oxidation with cone. H 2SO 4 followed by reaction with Fehling solution. Answer Answer: (c) Oxidation by heating with copper followed by reaction with Fehling solution. Question 3. The compound which gives the most stable carbonium ion on dehydration is (a) (CH 3) 2CHCH 2OH (b) (CH 3) 3COH (c) CH 3CH 2CH 2CH 2OH (d) CH 3CH OH CH 2 CH 3 Answer Answer: (b) (CH 3) 3COH Question 4. In the following compounds: The order of acidity is (a) III > IV > I > II (b) I > IV > III > II (c) II > I > III > IV (d) IV > III > I > II Answer Answer: (d) IV > III > I > II Question 5. In CH 3 CH 2 OH, the bond that undergoes heterolytical change most readily is (a) C-C (b) C-O (c) C-H (d) O-H Answer Answer: (d) O-H Question 6. Phenol reacts with Br 2 in CS 2 at low temperature to give (a) o-Bromophenol (b) o-and p-promophenols (c)...