Tautomerism is not exhibited by-

1. 

2. 
3. 

4. 

The correct order of the acidic strength for the above compounds is -

(I)	(II)	(III)

1. I > II > III                           

2. III > I > II

3. II > III > I                           

4. I > III > II

The boiling point of ethanol is higher than that of dimethyl ether due to the presence of

The compound B formed in the following sequence of reactions,

CH₃CH₂CH₂OH$\stackrel{{\mathrm{PCl}}_5}{\to }$A$\stackrel{\mathrm{Alc}.\mathrm{NaOH}}{\to }$B will be:

1. Propyne                                 

2. Propene

3. Propanal                                 

4. Propane

Ethyl alcohol is denatured by:

1. Methanol and formic acid

2. KCN

3. CH₃OH and C₆H₆

4. CH₃OH and pyridine

Chlorobenzene reacts with Mg in dry ether to give a compound (A) which further reacts

with ethanol to yield     

1. phenol                               

2. benzene

3. ethyl benzene                     

4. phenyl ether

Which of the following has highest boiling point?

1. Benzene                         

2. Phenol

3. Toluene                           

4. Ethyl benzene

The most acidic compound among the following is:

1.	ClCH2-CH2OH	2.
3.		4.

p-nitrophenol is stronger acid than phenol because nitro group is:

1. Electron withdrawing                       

2. Electron donating

3. Basic                                             

4. Acidic

The -OH group of an alcohol or the -COOH group of a carboxylic acid on can be replaced

by -Cl using

1. phosphorus pentachloride

2. hypochlorous acid

3. chlorine

4. hydrochloric acid