Which of the following reacts with water

1. CHCl₃                                     

2. CCl₄

3. CCl₃CHO                               

4. CH₂ClCH₂Cl

The order of decreasing acidic character of cyclohexanol (I), acetic acid (II), 2,4,6-trinitrophenol (III), and phenol (IV),is -                                                     

1. III>II>IV>I 

2. II>III>I>IV

3. II>III>IV>I 

4.  III>IV>II>I

Picric acid and benzoic acid can be distinguished by:

1. Aqueous NaHCO₃                   

2. Aqueous $\mathrm{NaOH}$

3. Aqueous FeCl₃                       

4.  Aqueous Na₂CO₃  

Butan-2-ol is a-

1. Primary alcohol                     

2. Secondary alcohol

3. Tertiary alcohol                       

4. None of the above

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

1. HCHO                       

2. H₂O

3. CO₂                         

4. CH₃CHO

CH₃CH₂Cl$\stackrel{\mathrm{NaCN}}{\to }$X $\stackrel{\mathrm{Ni}/{\mathrm{H}}_2}{\to }$Y$\stackrel{\mathrm{Acetic} \mathrm{anhydride}}{\to }$Z

In the above reaction sequence, Z is

1. CH₃CH₂CH₂NHCOCH₃

2. CH₃CH₂CH₂NH₂

3. CH₃CH₂CH₂CONHCH₃

4. CH₃CH₂CH₂CONHCOCH₃

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

1. P₂O₅                                   

2. Anhydride CaCl₂

3. Anhydride AlCl₃                     

4.Conc. H₂SO₄

Oxidation of allylic 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

Consider the following reaction, 

Ethanol $\stackrel{{\mathrm{PBr}}_3}{\to }$X$\stackrel{\mathrm{Alc}.\mathrm{KOH}}{\to }$Y$\underset{\left(\mathrm{ii}\right){\mathrm{H}}_2\mathrm{O}, \mathrm{heat}}{\overset{\left(\mathrm{i}\right) {\mathrm{H}}_2{\mathrm{SO}}_4, \mathrm{room} \mathrm{temperature}}{\to }}$Z

product Z is:

1. CH₂=CH₂

2. CH₃CH₂OCH₂CH₃

3. CH₃CH₂OSO₃H

4. CH₃CH₂OH

Which of the following are known as mercaptans?

1. Thio-alcohols                         

2. Thio-ethers

3. Thio-aldehydes                     

4. Thio-acids