Phenols( Acidic Nature, Electrophilic Substitution Reactions...) NEET Questions

Organic Chemistry - Organic Compounds Containing Oxygen

Phenols( Acidic Nature, Electrophilic Substitution Reactions...) MCQ Questions


1.
Phenol is more acidic than alcohol due to:
A.
Resonance stabilization
B.
Inductive effect
C.
High molecular weight
D.
Steric hindrance
😑 View Answer Rough Work Error
ANSWER :
A. Resonance stabilization
2.
Which of the following reacts with phenol to give salicylaldehyde?
A.
CHCl₃ + KOH
B.
CHCl₃ + HCl
C.
HCHO + KOH
D.
COClâ‚‚ + KOH
😑 View Answer Rough Work Error
ANSWER :
A. CHCl₃ + KOH
3.
Phenol reacts with bromine water to give:
A.
2-Bromophenol
B.
3-Bromophenol
C.
2,4,6-Tribromophenol
D.
Bromobenzene
😑 View Answer Rough Work Error
ANSWER :
C. 2,4,6-Tribromophenol
4.
Nitration of phenol gives:
A.
o-nitrophenol only
B.
p-nitrophenol only
C.
o- and p-nitrophenol
D.
m-nitrophenol
😑 View Answer Rough Work Error
ANSWER :
C. o- and p-nitrophenol
5.
Phenol on sulphonation with conc. H₂SO₄ at 100°C gives:
A.
o-phenolsulphonic acid
B.
p-phenolsulphonic acid
C.
m-phenolsulphonic acid
D.
benzenesulphonic acid
😑 View Answer Rough Work Error
ANSWER :
B. p-phenolsulphonic acid
6.
The electrophile in Reimer–Tiemann reaction is:
A.
:CHCl
B.
:CHBr
C.
:CHO
D.
:CClâ‚‚
😑 View Answer Rough Work Error
ANSWER :
D. :CClâ‚‚