Carbolic acid is the name used for:

(a) opium 

(b) phenol

(c) chloroform

(d) H2CO3

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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When phenol is reacted with chloroform and an alkali like NaOH, the compound formed is salicylaldehyde. If we use pyrene in place of chloroform the product obtained is:

(a) salicylaldehyde

(b) phenolphthalein

(c) salicylic acid

(d) cyclohexanol

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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Which represents Reimer-Tiemann reraction ?
(a)

(b)

(c)

(d)

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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When phenol is treated with excess bromine water, it gives:
(a) m-bromophenol

(b) o- and p-bromophenol

(c) 2,4-dibromophenol

(d) 2,4,6-tribromophenol

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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In the reaction, Phenol DIstillationZn(A) Conc. HNO3 at 60°CConc. H2SO4(B) NaOH(aq)Zn(C)

The compounds (A),(B) and (C) are of the following:

(a) benzene, nitrobenzene and aniline

(b) benzene, dinitrobenzene and m-nitroaniline

(c) toluene, m-nitrobenzene and m-toluidine

(d) benzene, nitrobenzene and hydrazobenzene

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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Phenol on oxidation gives chloranil. The oxidant used is:

1. K2S2O8

2. KMnO4

3. KCIO3 + HCl

4. none of these

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Phenols: Preparation, Properties, Acidic Nature of Phenol
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A characteristic group test for phenolic gp. is:

1. Liebermann's nitroso reaction
2. coupling with diazonium salt
3. aqueous FeCl3
4. all of the above

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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Phenol can be converted into salicylic acid by
(a) Etard's reaction
(b) Kolbe's reaction
(c) Reimer-Tiemann reaction
(d) both (b) and (c)

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Phenols: Preparation, Properties, Acidic Nature of Phenol
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Resorcinol and conc. H2SO4 in presence of phthalic anhydride produce a compound which is:

(a) a dye                             (b) an antiseptic

(c) an indicator                    (d) a detergent

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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Phenol is weakly acidic but does not react with NaHCO3 like carboxylic acids hence:-

1. phenol is weaker than carbonic acid
2. phenol is stronger than carbonic acid
3. phenol is stronger than carboxylic acid
4. none of the above

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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