Please refer to Chapter 11 Alcohols Phenols and Ethers MCQ Class 12 Chemistry with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 12 Chemistry. Students should refer to MCQ Questions for Class 12 Chemistry with Answers to score more marks in Grade 12 Chemistry exams. Students should read the chapter Alcohols Phenols and Ethers and then attempt the following objective questions.

MCQ Questions Class 12 Chemistry Chapter 11 Alcohols Phenols and Ethers

Alcohols Phenols and Ethers MCQ Class 12 Chemistry provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. Butane-2-ol is
(a) primary alcohol
(b) secondary alcohol
(c) tertiary alcohol
(d) aldehyde

Question. How many isomers of C₅H₁₁OH will be primary alcohols ?
(a) 5
(b) 4
(c) 2
(d) 3

Question. How many alcohol(s) with molecular formula C₄H₁₀O are chiral in nature?
(a) 1
(b) 2
(c) 3
(d) 4

Question. IUPAC name of m-cresol is ___________
(a) 2-methylphenol
(b) 3-chlorophenol
(c) 3-methoxyphenol
(d) benzene-1, 3-diol

Question. Which of the following is an example of unsymmetrical ether?
(a) C₂H₅OC₂H₅
(b) C₆H₅OC₆H^₅
(c) C₆H₅OC₂H₅
(d) CH₃OCH₃

Question. Which of the following will not form phenol or phenoxide ?
(a) C₆H₅N₂Cl
(b) C₆H₅SO₃Na
(c) C₆H₅Cl
(d) C₆H₅CO₂H

Question. The compound HOCH₂ −CH₂OH is  
(a) ethane glycol
(b) ethylene glycol
(c) ethylidene alcohol
(d) dimethyl alcohol

Question. Which of the following is dihydric alcohol ?
(a) Glycerol
(b) Ethylene glycol
(c) Catechol
(d) Resorcinol

Question. An example of a compound with functional group – O – is :
(a) acetic acid
(b) methyl alcohol
(c) diethyl ether
(d) acetone 

Question. Benzyl alcohol is obtained from benzaldehyde by
(a) Fittig’s reaction
(b) Cannizzaro’s reaction
(c) Kolbe’s reaction
(d) Wurtz’s reaction

Question. 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

Question. Isopropyl alcohol is obtained by reacting which of the following alkenes with concentrated H₂SO₄ followed by boiling with H₂O?
(a) Ethylene
(b) Propylene
(c) 2-Methylpropene
(d) Isoprene

Question. By which of the following methods alcohol can be prepared in excellent yield?
(a) From alkenes
(b) By hydroboration-oxidation
(c) From carbonyl compounds
(d) From Grignard reagent

Question. 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

Question. Ethyl alcohol can be prepared from Grignard reagent by the reaction of :
(a) HCHO
(b) R₂CO
(c) RCN
(d) RCOCl

Question. Commercially carboxylic acids are reduced to alcohols by converting them to the ______.
(a) esters
(b) aldehydes
(c) ketones
(d) amines

Question. Alcohols of low molecular weight are
(a) soluble in water
(b) soluble in water on heating
(c) insoluble in water
(d) insoluble in all solvents

Question. Which of the following has lowest boiling point ?
(a) p-Nitrophenol
(b) m-Nitrophenol
(c) o-Nitrophenol
(d) Phenol

Question. Alkenes convert into alcohols by
(a) hydrolysis by dil. H₂SO₄
(b) hydration of alkene by alkaline KMnO4
(c) hydrolysis by water vapours and conc. HNO₃
(d) hydration of alkene by aqueous KOH

Question. Which statement is not correct about alcohol?
(a) Molecular weight of alcohol is higher than water
(b) Alcohol of less no. of carbon atoms is less soluble in water than alcohol of more no. of carbon atoms
(c) Alcohol evaporates quickly
(d) All of the above

Question. If ethanol dissolves in water, then which of the following would be observed
(a) absorption of heat and contraction in volume
(b) emission of heat and contraction in volume
(c) absorption of heat and increase in volume
(d) emission of heat and increase in volume

Question. Which of the following is correct ?
(a) On reduction of any aldehyde, secondary alcohol is formed
(b) Reaction of vegetable oil with H₂SO₄ gives glycerine
(c) Sucrose on reaction with NaCl gives invert sugar
(d) Alcoholic iodine gives iodoform with NaOH

Question. Phenol is more acidic than alcohol because
(a) phenol is more stable than water
(b) phenol is aromatic and alcohol is aliphatic
(c) phenoxide ion is resonance stabilised
(d) None of these

Question. Which of the following are used to convert RCHO into RCH₂OH?
(i) H₂/Pd
(ii) LiAlH₄
(iii) NaBH₄
(iv) Reaction with RMgX followed by hydrolysis
(a) (i) and (ii)
(b) (i), (ii) and (iii)
(c) (ii), (iii) and (iv)
(d) (i) and (iii)

Question. Sodium salt of benzene sulphonic acid on fusion with caustic soda gives
(a) Benzene
(b) Phenol
(c) Thiophenol
(d) Benzoic acid

Question. Acidity of phenol is due to
(a) hydrogen bonding
(b) phenolic group
(c) benzene ring
(d) resonance stabilisation of its anion

Question. The ionization constant of phenol is higher than that of ethanol because :
(a) phenoxide ion is bulkier than ethoxide
(b) phenoxide ion is stronger base than ethoxide
(c) phenoxide ion is stabilized through delocalization
(d) phenoxide ion is less stable than ethoxide

Question. Which of the following compounds is oxidised to prepare methyl ethyl ketone?
(a) 2-Propanol
(b) l-Butanol
(c) 2-Butanol
(d) t-Butyl alcohol

Question. Which of the following reacts with NaOH to give an alcohol?
(a) Propene
(b) Butene
(c) Ethanal
(d) Methanal

Question. n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?
(a) PCl₅
(b) Reduction
(c) Oxidation with potassium dichromate
(d) Ozonolysis

Question. When phenol is heated with CHCl₃ and alcoholic KOH when salicyladehyde is produced. This reaction is known as
(a) Rosenmund’s reaction
(b) Reimer-Tiemann reaction
(c) Friedel-Crafts reaction
(d) Sommelet reaction

Question. HBr reacts fastest with
(a) 2-Mehtylpropan-1-ol
(b) 2-Methylpropene-2-ol
(c) propan-2-ol
(d) propan-1-ol

Question. Which one of the following alcohols is least soluble in water?
(a) CH₃OH
(b) C₃H₇OH
(c) C₄H₉OH
(d) C₁₀H₂₁OH

Question. Methanol and ethanol are miscible in water due to
(a) covalent character
(b) hydrogen bonding character
(c) oxygen bonding character
(d) None of these

Question. On distilling phenol with Zn dust, one gets :
(a) Toluene
(b) Benzaldehyde + ZnO
(c) ZnO + benzene
(d) Benzoic acid

Question. Lucas test is done to differentiate between
(a) alcohol and ketone
(b) alcohol and aromatic ketones
(c) 1°, 2° and 3° alcohols
(d) None of these

Question. Phenols do not react with one of the following :
(a) Alkali metals
(b) Sodium hydroxide
(c) Potassium hydroxide
(d) Sodium bi-carbonate

Question. Dehydration of 2-butanol yields
(a) 1-butene
(b) 2-butene
(c) 2-butyne
(d) Both (a) and (b)

Question. Which one of the following on oxidation gives a ketone ?
(a) Primary alcohol
(b) Secondary alcohol
(c) Tertiary alcohol
(d) All of these

Question. Primary and secondary alcohols on action of reduced copper give
(a) Aldehydes and ketones respectively
(b) Ketones and aldehydes respectively
(c) Only aldehydes
(d) Only ketones

Question. When ethyl alcohol reacts with acetic acid, the products formed are
(a) Sodium ethoxide + hydrogen
(b) Ethyl acetate + water
(c) Ethyl acetate + soap
(d) Ethyl alcohol + water

Question. To distinguish between salicylic acid and phenol, one can use
(a) NaHCO₃ solution
(b) 5% NaOH solution
(c) neutral FeCl₃
(d) bromine water

Question. Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
(a) 2, 4, 6-trinitrobenzene
(b) o-nitrophenol
(c) p-nitrophenol
(d) nitrobenzene

Question. 3 moles of ethanol react with one mole of phosphorus tribromide to form 3 moles of bromoethane and one mole of X. Which of the following is X?
(a) H₃PO₄
(b) H₃PO₂
(c) HPO₃
(d) H₃PO₃

Question. Methanol and ethanol can be distinguished by the following:
(a) By reaction with metallic sodium
(b) By reaction with caustic soda
(c) By heating with iodine and washing soda
(d) By heating with zinc and inorganic mineral acid

Question. Chemical name of salol is
(a) acetylsalicyclic acid
(b) sodium salicylate
(c) phenyl salicylate
(d) methyl salicylate

Question. Ethyl alcohol exhibits acidic character on reacting it with
(a) acetic acid
(b) sodium metal
(c) hydrogen chloride
(d) acidic K₂Cr2O₇

Question. 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

Question. Aspirin is an acetylation product of
(a) p-Dihydroxybenzene
(b) o-Hydroxybenzoic acid
(c) o-Dihydroxybenzene
(d) m-Hydroxybenzoic acid

Question. When phenol is treated with excess bromine water, it gives:
(a) m-Bromophenol
(b) o- and p-Bromophenol
(c) 2, 4-Dibromophenol
(d) 2, 4, 6-Tribromophenol

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