Alcohols, Phenols and Ethers  MCQs

MCQs of Alcohols, Phenols and Ethers

Showing 31 to 40 out of 120 Questions
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31.
The organic compound A on reaction with Na2Cr2O7 / H2SO4 gives B. This B on reduction in presence of Ni gives ethyl alcohol. What is A ?
(a) Ethanoic acid
(b) Ethene
(c) Ethanal
(d) Ethanol
Answer:

Option (d)

32.
Pick up the correct order of acidity of the following. (I) Phenol (II) P- Cresol (III) m- Nitrophenol (Iv) P - Nitrophenol
(a) IV >III >I > II
(b) II > IV > I > III
(c) I > II > IV > III
(d) III > II > I > IV
Answer:

Option (a)

33.
Pick the correct group of the following having decending order of its acidity.
(a) m - nitrophenol > p - nitrophenol > o - nitrophenol
(b) o - nitrophenol > m - nitrophenol > p - nitrophenol
(c) p - nitrophenol > m - nitrophenol > o - nitrophenol
(d) p - nitrophenol > o- nitrophenol > m- nitrophenol
Answer:

Option (d)

34.
Phenol on heating with alcoholic KOH and chloroform represent which reaction ?
(a) Reimer-Tiemann
(b) Koble-schmitt
(c) Gatermann
(d) Cannizaro
Answer:

Option (a)

35.
What is IUPAC name of glycerol ?
(a) 2-methayl-propan-2-ol
(b) Propan-1, 2, 3-triol
(c) Propan-1, 3-diol
(d) Ethane-1, 2-diol
Answer:

Option (b)

36.
Which is the hybridisation of C and O atom in C - OH of alcohol ?
(a) sp3 and sp3
(b) sp3 and sp2
(c) sp2 and sp3
(d) sp2 and sp2
Answer:

Option (a)

37.
Which of the following intermediates is formed during dehydration of alcohol ?
(a) Carbocation
(b) Carbanion
(c) Free radical
(d) Carbel
Answer:

Option (a)

38.
Which of the following by products is produced by the reaction of alcohol with PBr3 ?
(a) H3PO4
(b) H3PO3
(c) H3PO2
(d) H2PO3
Answer:

Option (b)

39.
What is the change in hybridisation of carbon atom during dehydration of alcohol containing -OH ?
(a) sp3 to sp2
(b) sp2 to sp3
(c) sp3 to sp
(d) sp to sp2
Answer:

Option (a)

40.
How many total isomeres of C7H8O are possible ?
(a) 2
(b) 3
(c) 4
(d) 5
Answer:

Option (d)

Showing 31 to 40 out of 120 Questions
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