
Phenols and Azo Dyes
Authored by Jayan Thomas
Chemistry, Science
12th Grade - University
Used 10+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the formulas below gives the condensed structural formula of phenol?
C6H5OH
C5H6OH
C6H5NH2
C6H5NO2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The -OH group attached to the benzene ring in phenol has an electron _________ effect, resulting in the ring being much more reactive.
withdrawing
donating
resonance
neutral
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The benzene ring in phenols undergoes a(n) ___________ reaction.
polymerization
addition
substitution
acylation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The activated benzene ring in phenols is attacked by a(n) ___________
nucleophile
catalyst
carbocation
electrophile
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The group attached to the benzene ring in phenols does NOT have a directing effect in which of the following positions?
3
2
4
6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When phenol is treated with excess bromine water, which of the following products is produced in the reaction?
3-bromophenol
bromophenol
2,4-dibromophenol
2,4,6-tribromophenol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When aqueous bromine reacts with phenol, a rapid decolorization of the yellow-orange color occurs. Identify which of the following below indicates the color of the precipitate formed from the reaction of aqueous bromine and phenol.
pink precipitate
blue precipitate
white precipitate
brown precipitate
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