Alcohols, Phenols and Ethers Practice Questions - DPP for JEE

 Page 1


PART-I (Single Correct MCQs)
1. Among the following compounds which can be dehydrated very easily
is
(a)
(b)
(c)
(d)
2. 2-Phenylethanol may be prepared by the reaction of phenylmagnesium
bromide with
Page 2


PART-I (Single Correct MCQs)
1. Among the following compounds which can be dehydrated very easily
is
(a)
(b)
(c)
(d)
2. 2-Phenylethanol may be prepared by the reaction of phenylmagnesium
bromide with
(a) HCHO
(b) CH
3
CHO
(c) CH
3
COCH
3
(d)
3. HBr reacts with CH
2
 = CH – OCH
3
 under anhydrous conditions at room
temperature to give
(a) BrCH
2
 – CH
2
 – OCH
3
(b) H
3
C – CHBr – OCH
3
(c) CH
3
CHO and CH
3
Br
(d) BrCH
2
CHO and CH
3
OH
4. From amongst the following alcohols the one that would react fastest
with conc. HCl and anhydrous ZnCl
2
, is  
(a) 2-Butanol
(b) 2- Methylpropan-2-ol
(c) 2-Methylpropanol
(d) 1- Butanol
5. Which of the following cannot be made by using Williamson’s
synthesis?
(a) Methoxybenzene
(b) Benzyl p-nitrophenyl ether
(c) Methyl tertiary butyl ether
(d) Di-tert-butyl ether
6. Absolute alcohol (100% alcohol) is prepared by distilling rectified spirit
over
(a) Na
(b) CaCl
2
(c) Mg
(d) Mg(OC
2
H
5
)
2
7. Reagent used to convert allyl alcohol to acrolein is
Page 3


PART-I (Single Correct MCQs)
1. Among the following compounds which can be dehydrated very easily
is
(a)
(b)
(c)
(d)
2. 2-Phenylethanol may be prepared by the reaction of phenylmagnesium
bromide with
(a) HCHO
(b) CH
3
CHO
(c) CH
3
COCH
3
(d)
3. HBr reacts with CH
2
 = CH – OCH
3
 under anhydrous conditions at room
temperature to give
(a) BrCH
2
 – CH
2
 – OCH
3
(b) H
3
C – CHBr – OCH
3
(c) CH
3
CHO and CH
3
Br
(d) BrCH
2
CHO and CH
3
OH
4. From amongst the following alcohols the one that would react fastest
with conc. HCl and anhydrous ZnCl
2
, is  
(a) 2-Butanol
(b) 2- Methylpropan-2-ol
(c) 2-Methylpropanol
(d) 1- Butanol
5. Which of the following cannot be made by using Williamson’s
synthesis?
(a) Methoxybenzene
(b) Benzyl p-nitrophenyl ether
(c) Methyl tertiary butyl ether
(d) Di-tert-butyl ether
6. Absolute alcohol (100% alcohol) is prepared by distilling rectified spirit
over
(a) Na
(b) CaCl
2
(c) Mg
(d) Mg(OC
2
H
5
)
2
7. Reagent used to convert allyl alcohol to acrolein is
(a) MnO
2
(b) H
2
O
2
(c) OsO
4
(d) KMnO
4
8. In Williamson synthesis of mixed ether having a primary and a tertiary
alkyl group if tertiary halide is used, then :  
(a) Rate of reaction will be slow due to slow cleavage of carbon-
halogen bond.
(b) Alkene will be the main product.
(c) Simple ether will form instead of mixed ether.
(d) Expected mixed ether will be formed.
9. Arrange the following in increasing order of their acidity?
o–cresol(a),  salicyclic acid(b), phenol(c)
(a) c < a < b
(b) b < c < a
(c) a < b < a
(d) a < c < b
10. Zerevitinov’s determination of active hydrogen in a compound is based
upon its reaction with
(a) Na
(b) CH
3
Mgl
(c) Zn
(d) Al
11. Sodium phenoxide when heated with CO
2
 under pressure at 125ºC
yields a product which on acetylation produces C
The major product C would be
(a)
Page 4


PART-I (Single Correct MCQs)
1. Among the following compounds which can be dehydrated very easily
is
(a)
(b)
(c)
(d)
2. 2-Phenylethanol may be prepared by the reaction of phenylmagnesium
bromide with
(a) HCHO
(b) CH
3
CHO
(c) CH
3
COCH
3
(d)
3. HBr reacts with CH
2
 = CH – OCH
3
 under anhydrous conditions at room
temperature to give
(a) BrCH
2
 – CH
2
 – OCH
3
(b) H
3
C – CHBr – OCH
3
(c) CH
3
CHO and CH
3
Br
(d) BrCH
2
CHO and CH
3
OH
4. From amongst the following alcohols the one that would react fastest
with conc. HCl and anhydrous ZnCl
2
, is  
(a) 2-Butanol
(b) 2- Methylpropan-2-ol
(c) 2-Methylpropanol
(d) 1- Butanol
5. Which of the following cannot be made by using Williamson’s
synthesis?
(a) Methoxybenzene
(b) Benzyl p-nitrophenyl ether
(c) Methyl tertiary butyl ether
(d) Di-tert-butyl ether
6. Absolute alcohol (100% alcohol) is prepared by distilling rectified spirit
over
(a) Na
(b) CaCl
2
(c) Mg
(d) Mg(OC
2
H
5
)
2
7. Reagent used to convert allyl alcohol to acrolein is
(a) MnO
2
(b) H
2
O
2
(c) OsO
4
(d) KMnO
4
8. In Williamson synthesis of mixed ether having a primary and a tertiary
alkyl group if tertiary halide is used, then :  
(a) Rate of reaction will be slow due to slow cleavage of carbon-
halogen bond.
(b) Alkene will be the main product.
(c) Simple ether will form instead of mixed ether.
(d) Expected mixed ether will be formed.
9. Arrange the following in increasing order of their acidity?
o–cresol(a),  salicyclic acid(b), phenol(c)
(a) c < a < b
(b) b < c < a
(c) a < b < a
(d) a < c < b
10. Zerevitinov’s determination of active hydrogen in a compound is based
upon its reaction with
(a) Na
(b) CH
3
Mgl
(c) Zn
(d) Al
11. Sodium phenoxide when heated with CO
2
 under pressure at 125ºC
yields a product which on acetylation produces C
The major product C would be
(a)
(b)
(c)
(d)
12. Williamson’s synthesis is used to prepare
(a) acetone
(b) diethyl ether
(c) P.V.C.
(d) bakelite
13. The product Y is
(a) Phthalic acid
(b) Isophthalic acid
(c) Phenolphthalein
(d) o-Hydroxysulphonic acid
14. Denaturation of alcohol is the
(a) mixing of CuSO
4
 (a foul smelling solid) and pyridine (to give the
colour) to make the commercial alcohol unfit for drinking.
(b) mixing of CuSO
4
 (to give the colour) and pyridine (a foul smelling
solid) to make the commercial alcohol unfit for drinking.
(c) mixing of Cu(OAc)
2
 and ammonia to make the commercial alcohol unfit
for drinking.
(d) mixing of Cu(OAc)
2
 and pyridine to make the commercial alcohol unfit
for drinking.
Page 5


PART-I (Single Correct MCQs)
1. Among the following compounds which can be dehydrated very easily
is
(a)
(b)
(c)
(d)
2. 2-Phenylethanol may be prepared by the reaction of phenylmagnesium
bromide with
(a) HCHO
(b) CH
3
CHO
(c) CH
3
COCH
3
(d)
3. HBr reacts with CH
2
 = CH – OCH
3
 under anhydrous conditions at room
temperature to give
(a) BrCH
2
 – CH
2
 – OCH
3
(b) H
3
C – CHBr – OCH
3
(c) CH
3
CHO and CH
3
Br
(d) BrCH
2
CHO and CH
3
OH
4. From amongst the following alcohols the one that would react fastest
with conc. HCl and anhydrous ZnCl
2
, is  
(a) 2-Butanol
(b) 2- Methylpropan-2-ol
(c) 2-Methylpropanol
(d) 1- Butanol
5. Which of the following cannot be made by using Williamson’s
synthesis?
(a) Methoxybenzene
(b) Benzyl p-nitrophenyl ether
(c) Methyl tertiary butyl ether
(d) Di-tert-butyl ether
6. Absolute alcohol (100% alcohol) is prepared by distilling rectified spirit
over
(a) Na
(b) CaCl
2
(c) Mg
(d) Mg(OC
2
H
5
)
2
7. Reagent used to convert allyl alcohol to acrolein is
(a) MnO
2
(b) H
2
O
2
(c) OsO
4
(d) KMnO
4
8. In Williamson synthesis of mixed ether having a primary and a tertiary
alkyl group if tertiary halide is used, then :  
(a) Rate of reaction will be slow due to slow cleavage of carbon-
halogen bond.
(b) Alkene will be the main product.
(c) Simple ether will form instead of mixed ether.
(d) Expected mixed ether will be formed.
9. Arrange the following in increasing order of their acidity?
o–cresol(a),  salicyclic acid(b), phenol(c)
(a) c < a < b
(b) b < c < a
(c) a < b < a
(d) a < c < b
10. Zerevitinov’s determination of active hydrogen in a compound is based
upon its reaction with
(a) Na
(b) CH
3
Mgl
(c) Zn
(d) Al
11. Sodium phenoxide when heated with CO
2
 under pressure at 125ºC
yields a product which on acetylation produces C
The major product C would be
(a)
(b)
(c)
(d)
12. Williamson’s synthesis is used to prepare
(a) acetone
(b) diethyl ether
(c) P.V.C.
(d) bakelite
13. The product Y is
(a) Phthalic acid
(b) Isophthalic acid
(c) Phenolphthalein
(d) o-Hydroxysulphonic acid
14. Denaturation of alcohol is the
(a) mixing of CuSO
4
 (a foul smelling solid) and pyridine (to give the
colour) to make the commercial alcohol unfit for drinking.
(b) mixing of CuSO
4
 (to give the colour) and pyridine (a foul smelling
solid) to make the commercial alcohol unfit for drinking.
(c) mixing of Cu(OAc)
2
 and ammonia to make the commercial alcohol unfit
for drinking.
(d) mixing of Cu(OAc)
2
 and pyridine to make the commercial alcohol unfit
for drinking.
15. Formation of which compound given below from1 - butanol needs an
oxidising agent?
(a)
(b)
(c)
(d)
16. What is X in the following reaction ?
 
(a)
(b)
(c) followed by 
(d)
17. Which one of the following substituents at para-position is most
effective in stabilizing the phenoxide ion?
(a) – CH
3
(b) – OCH
3
(c) – COCH
3
(d) – CH
2
OH
18. Williamson synthesis of ether is an example of:
(a) Nucleophilic addition
(b) Electrophilic addition
(c) Electrophilic substitution
(d) Nucleophilic substitution