CBSE Class 12 Alcohols Phenols and Ethers with Answers Multiple Choice Questions with Answers. MCQ Questions Class 12 Alcohols Phenols and Ethers with Answers with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Alcohols Phenols and Ethers with Answers MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Alcohols Phenols and Ethers with Answers - Set - 2
Question 1:
By heating phenol with chloroform in alkali, it is converted into
(a) salicylic acid
(b) salicylaidehyde
(c) anisole
(d) phenyl benzoate
Correct Answer – (B)
Question 2:
An organic compound ‘X’ with molecular fommla, C7H8O is insoluble in aqueous NaHCO3 but dissolves in NaOH. When treated with bromine water’ X’rapidly gives ‘Y’ C7H5OBr3 .
The compounds’ X’ and’ Y’ respectively, are
(a) benzyl alcohol and 2, 4, 6-tribromo-3-methoxy benzene
(b) benzyl alcohol and 2, 4, 6-tribromo-3-methyl phenol
(c) o-cresol and 3, 4, 5-tribromo-2-methyl phenol
(d) m-cresol and 2, 4, 6-tribromo-3-methyl phenol
Correct Answer – (D)
Question 3:
Phenol on heating with CCI4 and aqueous KOH gives salicylic acid. This reaction is
(a) Friedel-Craft reaction
(b) Diels-Alder reaction
(c) Reimer-Tiemann reaction
(d) Wittig reaction
Correct Answer – (C)
Question 4:
The most suitable reagent for the conversion of RCH2OH → RCHO is :
(a) KMnO4
(b) K2Cr2O7
(c) CrO3
(d) PCC (pyridine chlorochromate)
Correct Answer – (C)
Question 5:
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
Correct Answer – (A)
MCQ Questions Class 12 Alcohols Phenols and Ethers With Answers
Question 6:
Benzoylation of phenol in alkaline medium is known as
(a) Friedel-Crafts reaction
(b) Wurtz-Fittig reaction
(c) Schotten-Baurnann reaction
(d) Sabatier Senderens reduction
Correct Answer – (C)
Question 7:
Among the following, which is least acidic?
(a) phenol
(b) o-cresol
(c) p -nitrophenol
(d) p -chlorophenol
Correct Answer – (B)
Question 8:
When o- or p -phenol sulphonic acid is treated with bromine water, the product formed is
(a) 2, 4-dibromophenol
(b) 2, 4, 6-tribromophenol
(c) 3-bromophenol boric acid
(d) 3, 5-dibromophenol
Correct Answer – (B)
Question 9:
Among the following the one which reacts most readily with ethanol is
(a) p-nitrobenzyl bromide
(b) p-chlorobenzyl bromide
(c) p-methoxybenzyl bromide
(d) p-methylbenzyl bromide
Correct Answer – (D)
Question 10:
Intermolecular hydrogen bonding is strongest in :
(a) Methylamine
(b) Phenol
(c) Formaldehyde
(d) Methanol
Correct Answer – (D)
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