Practice MCQs for Class 12 Chemistry Unit 7 Alcohols Phenols and Ethers
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Question. Lucas reagent is
(a) conc. HCl and anhydrous ZnCl2
(b) conc. HNO3 and hydrous ZnCl2
(c) conc. HCl and hydrous ZnCl2
(d) conc. HNO3 and anhydrous ZnCl2.
Answer : A
Question. Methanol is industrially prepared by
(a) oxidation of CH4 by steam at 900ºC
(b) reduction of HCHO using LiAIH4
(c) reaction of HCHO with a solution of NaOH
(d) reduction of CO using H2 and ZnO–Cr2O3
Answer : D
Question. The major products C and D formed in the following reactions respectively are H3C−CH2−CH2−O−C(CH3)3 excess HI C + D
(a) H3C−CH2−CH2−I and I−C(CH3)3
(b) H3C−CH2−CH2−OH and I−C(CH3)3
(c) H3C−CH2−CH2−I and HO−C(CH3)3
(d) H3C−CH2−CH2−OH and HO−C(CH3)3
Answer : A
Question. The heating of phenyl methyl ether with HI produces
(a) iodobenzene
(b) phenol
(c) benzene
(d) ethyl chloride.
Answer : B
Question. Among the following sets of reactants which one produces anisole?
(a) CH3CHO ; RMgX
(b) C6H5OH ; NaOH ; CH3I
(c) C6H5OH ; neutral FeCl3
(d) C6H5CH3 ; CH3COCl ; AlCl3
Answer : B
Question. The major organic product in the reaction is CH3 – O – CH(CH3)2 + HI products
(a) CH3I + (CH3)2CHOH
(b) CH3OH + (CH3)2CHI
(c) ICH2OCH(CH3)2
(d) CH2OC(CH3)2
Answer : A
Question. Ethyl chloride is converted into diethyl ether by
(a) Perkins reaction
(b) Grignard reaction
(c) Wurtz synthesis
(d) Williamson’s synthesis.
Answer : D
Question. Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
(a) Diethyl ether
(b) Acetonitrile
(c) Acetamide
(d) Methyl acetate
Answer : A
Question. The compound which does not react with sodium is
(a) CH3COOH
(b) CH3CHOHCH3
(c) C2H5OH
(d) CH3OCH3
Answer : D
Question. Which one is formed when sodium phenoxide is heated with ethyl iodide?
(a) Phenetole
(b) Ethyl phenyl alcohol
(c) Phenol
(d) None of these
Answer : A
Question. Intermolecular hydrogen bonding is strongest in :
(a) Methylamine
(b) Phenol
(c) Formaldehyde
(d) Methanol
Answer : D
Question. Propan-1-ol can be prepared from propene by :
(a) H2O / H2SO4
(b) Hg(OAc)2 / H2O followed by NaBH4
(c) B2H6 followed by H2O2
(d) CH3CO2H/H2SO4
Answer : A
Question. C2H5O Hand C6H5OHcan be distinguished by
(a) Br2 + H2O
(b) FeCI3
(c) I2 + NaOH
(d) Both (b) and (c)
Answer : D
Question. Phenol is more acidic than alcohol because
(a) phenol is more soluble in polar solvents
(b) alcohol does not lose hydrogen atom
(c) phenoxide ion is stabilised by resonance
(d) phenoxide ion doesn’t exhibit resonance
Answer : C
Question. Picric acid is a stronger acid than acetic acid and benzoic acid. It contains
(a) —SO3H group
(b) two—COOH groups
(c) phenolic group
(d) three—COOH groups
Answer : C
Question. Which of the following compound would not evolve CO2 when treated with NaHCO3 solution?
(a) Salicylic acid
(b) Phenol
(c) Benzoic acid
(d) 4-nitrobenzoic acid
Answer : B
Question. CH3OC2H5 and (CH3)3 C – OCH3 are treated with hydroiodic acid. The fragments obtained after reactions are
(a) CH3I + HOC2H5; (CH3)3 Cl + HOCH3
(b) CH3OH + C2H5I; (CH3)3 Cl + HOCH3
(c) CH3OH + C2H5I; (CH3)3COH + CH3I
(d) CH3I + HOC2H5; CH3I + (CH3)3 COH.
Answer : D
Question. Which of the following is a primary halide?
(a) Iso-propyl iodide
(b) Secondary butyl iodide
(c) Tertiary butyl bromide
(d) Neohexyl chloride
Answer : A
Question. An organic compound X on treatment with pyridinium chlorochromate in dichloromethane gives compound Y. Compound Y reacts with I2 and alkali to form triiodomethane. The compound ‘X’ is
(a) C2H5OH
(b) CH3CHO
(c) CH3COCH3
(d) CH3COOH
Answer : C
Question. The formation of diethyl ether from ethanol is based on :
(a) Dehydrogenation reaction
(b) Hydrogenation reaction
(c) Dehydration reaction
(d) Heterolytic fission reaction
Answer : D
Question. Chloropicrin is obtained by the reaction of
(a) steam on carbon tetrachloride
(b) nitric acid on chlorobenzene
(c) chlorine on picric acid
(d) nitric acid on chloroform
Answer : A
Question. Ethanol can be prepared more easily by which reaction ?
(i) CH3CH2Br + H2O → CH3CH2OH
(ii) CH3CH2Br + Ag2O (in boiling water)→ CH3CH2OH
(a) by (i) reaction
(b) by (ii) reaction
(c) Both reactions proceed at same rate
(d) by none
Answer : C
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Unit 7 Alcohols Phenols and Ethers Objective Questions & Solutions for Class 12 Chemistry
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You can get most exhaustive CBSE Class 12 Chemistry Alcohols Phenols and Ethers MCQs Set 02 for free on StudiesToday.com. These MCQs for Class 12 Chemistry are updated for the 2026-27 academic session as per CBSE examination standards.
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