Which of the following reagents is most suitable for converting cyclohexanol into cyclohexene?

1.	conc. HCl + ZnCl2	2.	conc. H3PO4
3.	HBr	4.	conc. HCl

Which of the following is most acidic?

1. p-cresol                               

2. p-chlorophenol

3. p-nitrophenol                       

4. p-aminophenol

Identify the compound Z in the following reaction sequence:
  

1.	\(\mathrm{CH_3-CH_2-CH_2-OH}\)
2.
3.	\(\mathrm{(C_2H_5)_3C-OH}\)
4.	\(\mathrm{CH_3-CH=CH_2}\)

The alkyl halide is converted into an alcohol by 

1. addition                           

2. substitution

3. dehydrohalogenation         

4. elimination

Glycerol on warming with excess of HI:

1. 2-iodopropane

2. 1-iodopropane

3. 1,2,3-tri-iodopropane

4. none of the above

When 2-butanol is passed over heated copper at 573 K, it undergoes dehydrogenation to form:

1. 2-Butene                                         

2. Butanone

3. Butyraldehyde                                 

4. 1-Butene

The compound having lowest boiling point among the following is -

1. Phenol                                 

2. o-Nitrophenol

3. m-Nitrophenol                       

4. p-Nitrophenol

Oxidation of 2-propanol by K₂Cr₂O₇ and dilute H₂SO₄ leads to the formation of:

1. Propanal                     

2. Propanoic acid

3. Methanoic acid             

4. Propanone

A compound X with molecular formula C₃H₈O can be oxidised to a compound Y with the molecular formula C₃H₆O₂. X is most likely to be:

1. Primary alcohol                     

2. Secondary alcohol

3. Aldehyde                               

4. Ketone

Why is the ionisation constant of phenol higher than that of ethanol?                

1. Phenoxide ion is bulkier than ethoxide

2. Phenoxide ion is a stronger base than ethoxide

3. Phenoxide ion is stabilised through delocalisation

4. Phenoxide ion is less stable than ethoxide