Organic Chemistry Questions and Answers – Reactions of Phenols | Organic Chemistry Multiple Choice Questions and Answers

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Questions
1 Phenolphthalein is obtained by heating phenol with conc. H2SO4 and which of the following reactant?
A Benzyl alcohol
B Benzene
C Benzoic acid
D Phthalic anhydride

Answer: Phthalic anhydride
2 Salicylaldehyde can be prepared from which of the following reactants?
A Phenol and chloroform
B Phenol, chloroform and sodium hydroxide
C Phenol, carbon tetrachloride and NaOH
D Phenol, carbon tetrachloride

Answer: Phenol, chloroform and sodium hydroxide
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3 When phenol is treated with excess of bromine water, it gives which of the following product?
A m-bromophenol
B o-and p-bromophenol
C 2,4-dibromophenol
D 2,4,6-tribromophenol

Answer: 2,4,6-tribromophenol
4 Phenol reacts with bromine in carbon disulphate at low temperature to give which of the following product?
A m-bromophenol
B o-and p-bromophenol
C p-bromophenol
D 2,4,6-tribromophenol

Answer: o-and p-bromophenol
5 Bromine reacts with phenol and decolorize orange color and turns it to which of the colored precipitate?
A white precipitate
B pink precipitate
C blue precipitate
D black precipitate

Answer: white precipitate
6 Which of the following regents may be used to distinguish between phenol and benzoic acid?
A Aqueous NaOH
B Tollen’s reagent
C Molisch reagent
D Neutral FeCl3

Answer:Neutral FeCl3
7 What is the major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide?
A Benzoic acid
B Salicyladehyde
C Salicylic acid
D Phthalic acid

Answer: Salicylic acid
8 Picric acid is formed when phenol react with which of the following reactant?
A Formaldehyde
B Hydrogen
C Nitric acid
D Hydrochloric acid

Answer: Nitric acid
9 Bakelite is formed when phenol react with which of the following reactant?
A Formaldehyde
B Hydrogen
C Nitric acid
D Sulphuric acid

Answer: Formaldehyde
10 Phenol undergoes ionization to become more stable by reacting with which of the following chemical species?
A negative ions
B positive ions
C radicals
D neutral atoms

Answer: negative ions

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