Given are cyclohexanol (I), acetic acid (II), 2,4,6-trinitrophenol (III) and phenol (IV). In these, the order of decreasing acidic character will be                                                       

(a) III>II>IV>I                        (b) II>III>I>IV

(c) II>III>IV>I                        (d) III>IV>II>I

Concept Questions :-

Phenols: Preparation, Properties, Acidic Nature of Phenol
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Picric acid and benzoic acid can be distinguished by:

1. aqueous NaHCO3                   

2. aqueous NaOH

3. aqueous FeCl3                       

4.  aqueous Na2CO3  

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Butan-2-ol is:

(a) primary alcohol                      (b) secondary alcohol

(c) tertiary alcohol                       (d) none of these

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Primary alcohols can be obtained from the reaction of the RMgX with:

1. HCHO                       2. H2O

3. CO2                          4. CH3CHO

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CH3CH2ClNaCNNi/H2YAcetic anhydrideZ

In the above reaction sequence, Z is

(a) CH3CH2CH2NHCOCH3

(b) CH3CH2CH2NH2

(c) CH3CH2CH2CONHCH3

(d) CH3CH2CH2CONHCOCH3

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The commonly used dehydrating agent in the preparation of an ester is :

(a) P2O5                                    (b) anhydride CaCl2

(c) anhydride AlCl3                      (d) conc. H2SO4

Concept Questions :-

Alcohols: Preparation, Physical and Chemical Properties
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Oxidation of ally alcohol, (CH2=CH-CH2OH) gives a mixture of oxalic acid and formic acid. If this oxidation is done in presence of bromine. One would expect only:

(1) oxalic acid

(2) formic acid

(3) succinic acid

(4) acrylic acid

Concept Questions :-

Alcohols: Preparation, Physical and Chemical Properties
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Consider the following reaction, 

Ethanol PBr3XAlc.KOHY(ii)H2O, heat(i) H2SO4, room temperatureZ

The product Z is

1. CH2=CH2

2. CH3CH2OCH2CH3

3. CH3CH2OSO3H

4. CH3CH2OH

Concept Questions :-

Alcohols: Preparation, Physical and Chemical Properties
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Which of the following are known as mercaptans?

1. Thio-alcohols                         

2. Thio-ethers

3. Thio-aldehydes                     

4. Thio-acids

Concept Questions :-

Ethers: Preparation, Physical & Chemical Properties, Uses
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Glycol condenses with ketones to give:

1. cyclic acetals                   2. cyclic ketals

3. acetaldehyde                   4. oxalic acid

Concept Questions :-

Alcohols: Preparation, Physical and Chemical Properties
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