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JEE Questions for Chemistry Alcohols Phenols And Ethers Quiz 2 - MCQExams.com
JEE
Chemistry
Alcohols Phenols And Ethers
Quiz 2
An organic acid without a carboxylic acid group is
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0%
picric acid
0%
oxalic acid
0%
vinegar
0%
ascorbic acid
The order of melting point of
ortho, para, meta
nitrophenol is
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o > m > p
0%
p > m > o
0%
m > p > o
0%
p > o > m
Acidity of phenol is due to
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hydrogen bonding
0%
phenolic group
0%
benzene ring
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resonance stabilisation of its anion
Phenol on treatement with diethyl sulphate in presence of NaOH gives
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phenetole
0%
anisole
0%
diphenyl ether
0%
diethyl ehter
Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
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2, 4, 6-trinitrobenzene
0%
o-nitrophenol
0%
p-nitrophenol
0%
nitrobenzene
Among the following, which is least acidic ?
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phenol
0%
o-cresol
0%
p-nitrophenol
0%
p-chlorophenol
Picric acid is a stronger acid than acetic acid and benzoic acid. It contains
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—SO3H group
0%
two —COOH groups
0%
phenolic group
0%
three—COOH groups
Which of the following compound would not evolve CO
2
when treated with NaHCO
3
solution ?
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Salicylic acid
0%
Phenol
0%
Benzoic acid
0%
4-nitrobenzoic acid
By heating phenol with chloroform in alkali, it is converted into
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salicylic acid
0%
salicylaldehyde
0%
anisole
0%
phenyl benzoate
C
2
H
5
OH and C
6
H
5
OH can be distinguished by
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Br2 + H2O
0%
FeCl3
0%
I2 + NaOH
0%
Both (and (3)
On reacting with neutral ferric chloride, phenol gives
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red colour
0%
blue colour
0%
violet colour
0%
green colour
Carbolic acid is
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0%
HCOOH
0%
CH3COOH
0%
C6H5COOH
0%
C6H5OH
When benzene sulphonic acid and
p
-nitrophenol are treated with NaHCO
3
, the gases released respectively are
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SO2 , NO2
0%
SO2 , NO
0%
SO2 , CO2
0%
CO2
Phenol on reaction with CHCl
3
and NaOH give benzaldehyde. Intermediate of this reaction is
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carbocation
0%
carbanion
0%
radical
0%
carbene
What amount of bromine will be required to convert 2 g of phenol into 2, 4, 6-tribromo phenol?
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4.00
0%
6.00
0%
10.22
0%
20.44
Picric acid is
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0%
2, 4, 6-tribromophenol
0%
sym-trinitrophenol
0%
trinitrophenol
0%
2,4,6-trinitrotoluence
Cumene process is the most important commercial method for the manufacture of phenol. Cumene is
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1-methyl ethyl benzene
0%
ethyl benzene
0%
vinyl benzene
0%
propyl benzene
Phenol gives characteristic colouration with
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iodine solution
0%
bromine water
0%
aqueous FeCl3 solution
0%
ammonium hydroxide
Which is obtained on treating phenol, with dilute HNO
3
?
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0%
0%
2)
0%
0%
None of these
To distinguish between salicylic acid and phenol one can use
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NaHCO3 solution
0%
5% NaOH solution
0%
neutral FeCl3
0%
bromine water
When phenyl magnesium bromide reacts with t-butanol, the product would be
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benzene
0%
phenol
0%
t-butyl benzene
0%
t-butyl phenyl ether
Strength of acidity is in order
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II > I > III > IV
0%
III > IV > I > II
0%
I > IV > III > II
0%
IV > III > I > II
When CH
2
=CH—O—CH
2
—CH
3
reacts with one mole of HI, one of the products formed is
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ethane
0%
ethanol
0%
iodoethene
0%
ethanal
A simple method to remove peroxides from ethers is to treat them with an aqueous solution of
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0%
Br2
0%
KI
0%
KCNS
0%
Na2S2O3
Which one of the following compounds will not react with CH
3
MgBr?
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Ethyl acetate
0%
Acetone
0%
Dimethyl ether
0%
Ethanol
What is the hybridisation of carbon and oxygen in electronic structure of ether?
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sp3 and sp2
0%
sp3 and sp3
0%
sp and sp
0%
sp2 and sp2
If the boiling point of ethanol (molecular weight =is 78°C, what is the boiling point of diethyl ether ? (molecular weight =
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100°C
0%
78°C
0%
86°C
0%
34°C
Anisole is the product obtained from phenol by the reaction known as
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0%
coupling
0%
etherification
0%
oxidation
0%
esterification
Tert
-butyl methyl ether on heating with anhydrous HI in ether gives
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0%
CH3OH + (CH3)3Cl
0%
CH3I + (CH3)3 COH
0%
CH3I + (CH3)3 Cl
0%
None of the above
The products obtained when benzyl phenyl ether is heated with HI in the mole ratio 1 : 1 areI. phenolII. benzyl alcohol III. benzyl iodide IV. iodobenzene
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0%
I and III
0%
III and IV
0%
I and IV
0%
II and IV
0%
II and III
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