The best method to prepare cyclohexene from cyclohexanol is by using:

1. Conc. HCl + ZnCl₂                     

2.  Conc. H₃PO₄

3. HBr                                           

4. Conc. HCl

An alcohol on oxidation is found to give CH₃COOH and CH₃CH₂COOH. The alcohol is:

1. CH₃CH₂CH₂OH

2. (CH₃)₂C(OH)CH₂CH₃

3. CH₃(CH₂)₂CH₂OH

4. CH₃CH(OH)CH₂CH₂CH₃

The product in the reaction is:

C₂H₅OH $\stackrel{\mathrm{P}+{\mathrm{I}}_2}{\to }$A$\underset{\mathrm{Ether}}{\overset{\mathrm{Mg}}{\to }}$B$\stackrel{\mathrm{HCHO}}{\to }$C$\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }$D

1. Propanal                           

2. Butanal

3. n-Butanol                         

4.  n-Propanol

Which alcohol is most acidic?

1. Methanol                               

2. Ethanol

3. Isopropyl alcohol                     

4. t-Butyl alcohol

Which of the following are known as mercaptans?

1. Thio-alcohols                         

2. Thio-ethers

3. Thio-aldehydes                     

4. Thio-acids

Picric acid and benzoic acid can be distinguished by:

1. Aqueous NaHCO₃                   

2. Aqueous $\mathrm{NaOH}$

3. Aqueous FeCl₃                       

4.  Aqueous Na₂CO₃  

Ethyl alcohol is also known as:

1. Spirit of wine                         

2. Methyl carbinol

3. Grain alcohol                           

4. All of the above

The value of C–O–C angle in ether molecule is:

1. 180$°$                                     

2. 150$°$ 

3. 90$°$                                       

4. 110$°$

Proof spirit contains about:

1. 48% alcohol by mass

2. 10% alcohol by mass

3. 5% alcohol by mass

4. 90% alcohol by mass

Glycerol on oxidation with dil. HNO₃ gives:

1. Tartronic acid                               

2. Mesoxalic acid

3. Oxalic acid                                   

4. Glyceric acid