Alcohol phenol and ether important questions

Rajasthan Board RBSE Class 12 Chemistry Chapter 11 Important Questions Alcohols, Phenols and Ethers Objective Type Questions: Question 1. Chloroethane (C 2H 5Cl) reacts with A to form diethylether. The compound A may be: (a) NaOH (b) H 2SO 4 (c) C 2H 5ONa (d) Na 2S 2O 3 Answer: (c) C 2H 5ONa Question 2. Primary alcohol on catalytic hydrogenation gives a/an: (a) aldehyde (b) Ketone (c) alkane (d) ester Answer: (a) aldehyde Question 3. An organic compound X having C, H and O possesses a pleasant odour with boiling point of 78°C. (a) C 2H 5C (b) C 2H 5OH (c) CH 3COOC 2H 5 (d) C 2H 6 Answer: (b) C 2H 5OH Question 4. An organic compound having molecular formula C 4H 9Cl on reaction with Na in the presence of di-ethyl ether gives a hydrocabon which on monochlorination gives only one chloroderivative, the organic compound is: (a) n-butyl chloride (b) iso-butylchloride (c) tert-butyl chloride (d) sec. butylchloride Answer: (c) tert-butyl chloride Question 5. An oxygen containing organic compound forms a carboxylic acid as the main product upon oxidation with its molecular mass higher by 14 units. The organic compound is: (a) an aldephyde (b) a ketone (c) a primary alcohol (d) a secondary alcohol Answer: (c) a primary alcohol Question 6. An alcohol is less volatile than ether having same molecular formula. It is due to: (a) inter-molecular H-bonding in alcohol (b) inter-molecular H-bonding in ethers (c) dipolar nature of ethers (d) resonance in alcohol Answer: (a) inter-molecular H...

Students can read the important questions given below for Alcohols, Phenols and Ethers Class 12 Chemistry. All Alcohols, Phenols and Ethers Class 12 Notes and questions with solutions have been prepared based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS. You should read all notes provided by us and Important Questions of Alcohols, Phenols and Ethers Class 12 Very Short Answer Questions Question.Write the IUPAC name of the given compound : Answer.2-Methylprop-2-en-1-ol Question.Write the IUPAC name of the givencompound: Answer.3-methylbut-2-en-1-ol Question.Write the IUPAC name of the followingcompound : Answer.1-methoxy-2-methylbutane Question.The C— O bond is much shorter in phenol thanin ethanol. Give reason. Answer.Due to resonance C—O bond acquires some partial double bond character. So, in phenol C—O bond length is smaller than ethanol. Question.Which of the following isomers is more volatile : o-nitrophenol or p-nitrophenol? Answer.o-Nitrophenol is more steam volatile thanp-Nitrophenol due to the presence of intramolecularH-bonding. p-nitrophenol shows intermolecularH–bonding. Question.Write the equation involved in the followingreaction : Reimer –Tiemann reaction Answer. That’s why o-nitrophenol has lower boiling point than p-nitrophenol. Question.Name the following according to IUPAC system : Answer.Butan-2-ol Question.Write the structure of the molecule of compoundwhose IUPAC name is 1-Phenylpropan-2-o1 Answer. Question.Give the ...

MCQs Based On Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers Q.1. The compound which reacts fastest with Lucas reagent at room temperature is (a) Butan-1-ol (b) Butan-2-ol (c) 2-Methyl propan-1-ol (d) 2-Methylpropan-2-ol Answer Answer: (d) Q.2. In the reduction R — CHO + H 2 → RCH 2OH the catalyst used is : (a) Ni (b) Pd (c) Pt (d) Any of these Answer Answer: (d) Any one of Ni, Pt or Pd can be used in the reduction of aldehydes. Q.3. Acid catalyzed hydration of alkenes except ethene leads to the formation of (a) primary alcohol (b) secondary or tertiary alcohol (c) mixture of primary and secondary alcohols (d) mixture of secondary and tertiary alcohols Answer Answer: (b) Q.4. Ethyl alcohol can be prepared from Grignard reagent by the reaction of : (a) HCHO (b) R 2CO (c) RCN (d) RCOCl Answer Answer: (a) Q.5. Isopropyl alcohol is obtained by reacting which of the following alkenes with concentrated H 2SO 4 followed by boiling with H 2O? (a) Ethylene (b) Propylene (c) 2-Methylpropene (d) Isoprene Answer Answer: (b) Q.6. Ethylene reacts with Baeyer’s reagent to give (a) ethane (b) ethyl alcohol (c) ethylene glycol (d) None of these Answer Answer: (c) Q.7. Ethyl alcohol is industrially prepared from ethylene by (a) Permanganate oxidation (b) Catalytic reduction (c) Absorbing in H2SO4 followed by hydrolysis (d) All the three Answer Answer: (c) Q.8. Sodium salt of benzene sulphonic acid on fusion with caustic soda gives (a) Benzene (b) Phenol (c) Thiophenol (d) Benzoi...

CBSE Class 12th Chapter, Alcohols, Phenols and Ether carries 4 Marks in board exam. Experts of Jagranjosh.com offer the best practice material that covers all important questions so that students will not miss any portion while preparing for board exams or competitive exams. Consider the mentioned terms/questions at the time of studying. • Study the classification compounds of alcohol, phenol & ether, as this will give a basic idea of the chapter. • Write the IUPAC names of the following compounds: • Understand the –c-OH bond in alcohols, ethers and phenols; its bond angle & properties. • Understand the mechanism of compound formation by markonikov rule or by any other method. • Why is lithium aluminum hydride being a strong reducing agent not used for reducing acid to alcohol? To get the CBSE class 12 th GUESS PAPERS, Click Here • Grignard reagent is an important catalyst & is usually asked in examination. • Understand the mechanism using Grignard reagent. • Preparation of phenol also need to be covered, most important being preparation from cumene. • The physical properties of alcohols and phenols, with reasonable explanation. • Chemical reaction showing cleavage of –OH bond. To get the CBSE class 12 th PRACTICE PAPERS, Click Here • Why are primary alcohols more acidic than tertiary alcohols? Explain. • Why alcohols act as bronsted bases? • Prove that phenols are stronger acids than alcohols when reaction with water occurs? • Show how the nitro group can enhance the acid...

Contents • 1 Important Questions for CBSE Class 12 Chemistry – Alcohols, Phenols And Ethers • 1.1 PREVIOUS YEARS QUESTIONS • 1.1.1 2015 • 1.1.2 Very Short Answer Type Questions [1 Mark] • 1.1.3 Short Answer Type Questions [II] [3 Marks] • 1.1.4 Long Answer Type Questions [5 Marks] • 1.1.5 2014 • 1.1.6 Very Short Answer Type Questions [1 Mark] • 1.1.7 Short Answer Type Questions [I] [2 Marks] • 1.1.8 Short Answer Type Questions [II] [3 Marks] • 1.1.9 2013 • 1.1.10 Very Short Answer Type Questions [1 Mark] • 1.1.11 Short Answer Type Questions [I] [2 Marks] • 1.1.12 Short Answer Type Question [II] [3 Marks] • 1.1.13 2012 • 1.1.14 Very Short Answer Type Questions [1 Mark] • 1.1.15 Short Answer Type Questions [I] [2 Marks] • 1.1.16 Short Answer Type Questions [II] [3 Marks] • 1.1.17 2011 • 1.1.18 Very Short Answer Type Questions [1 Mark] • 1.1.19 Short Answer Type Questions [I] [2 Marks] • 1.1.20 Short Answer Type Questions [II] [3 Marks] • 1.1.21 2010 • 1.1.22 Very Short Answer Type Questions [1 Mark] • 1.1.23 Short Answer Type Questions [I] [2 Marks] • 1.1.24 Short Answer Type Questions [II] [3 Marks] • 1.1.25 2009 • 1.1.26 Very Short Answer Type Questions [1 Mark] • 1.1.27 Short Answer Type Questions [I] [2 Marks] • 1.1.28 Short Answer Type Questions [II] [3 Marks] Important Questions for CBSE Class 12 Chemistry – Alcohols, Phenols And Ethers PREVIOUS YEARS QUESTIONS 2015 Very Short Answer Type Questions [1 Mark] Question 1: Write the IUPAC name of the given compound: Answer...

Hey Students, read this article and you’ll be able to get alcohol phenol and ether neet questions pdf. Alcohol Phenol and Ether is chapter 11 of class 12 Chemistry and is an important chapter to cover for Neet Exams. In this article you’ll find top 20 alcohol phenol and ether neet questions pdf . You can get pdf of question paper. These questions are taken from previous year Neet Paper and is important to you. You can follow our blog if you want to get notes, mock paper and previous year questions of JEE , Neet and other competitive exams. Is Alcohol Phenol and Ether is an important chapter for Neet Exams ? Answer is yes , alcohol phenol and ether is an important topic of Neet Exams. You can see neet previous year questions , you’ll find that every year there is something from this alcohol phenol and ether . So, you have to cover topics of this chapter too, if you are preparing for NEET Exam. You will find a link below for “ Alcohol Phenol and Ether Neet Questions PDF“ Chapter wise Syllabus of Chemistry for Neet Exam Topics of Alcohol Phenol and Ether For Neet Exams 1. Alcohol A. Nomenclature B. Preparation C. Physical Properties and Chemical properties D. Mechanism dehydration E. Uses:- Methanol and Ethanol 2. Phenol F. Nomenclature G. Preparation H. Physical and Chemical Properties I. Acidic Nature J. Electrophilic substitution reaction K. Uses 3.Ether L. Nomenclature M. Preparation N. Physical and Chemical properties O. Uses Neet Previous Year Chemistry Questions PDF In...

The students who are appearing CBSE Class 12th Chemistry Examination 2020 can go through the below-mentioned important questions for the chapter Alcohols, Phenols and Ethers. The questions and answers mentioned in this article are strictly based on the latest CBSE pattern. Key Points to be mentioned while writing the answers to the below mentioned important questions: Question 1- Write the products for the following: (i) (ii) (iii) Answer: (i) (ii) (iii) Question 2- Define: (i) Kolbe’s reaction (ii) Williamson synthesis (iii) Reimer-Tiemann reaction (iv) Friedel-Crafts reaction Answer: (i) Kolbe’s reaction: Phenoxide ion generated by treating phenol with sodium hydroxide is even more reactive than phenol towards electrophilic aromatic substitution. Hence, it undergoes electrophilic substitution with carbon dioxide, a weak electrophile. Ortho hydroxybenzoic acid is formed as the main reaction product. (ii) Williamson synthesis: It is an important laboratory method for the preparation of symmetrical and unsymmetrical ethers. In this method, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted alkyl groups (secondary or tertiary) may also be prepared by this method. The reaction involves the S N2 attack of an alkoxide ion on primary alkyl halide. Better results are obtained if the alkyl halide is primary. In case of secondary and tertiary alkyl halides, elimination competes over substitution. If a tertiary alkyl halide is used, an alkene is ...