The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is:

1. Acidic KMnO₄

2. aAkaline K₂Cr₂O₇

3. Chromium anhydride in glacial acetic acid

4. Pyridinium chlorochromate

Ethers are not distilled to dryness for fear of explosion. This is due to formation of:

1. oxides                             

2. alcohol

3. ketones                           

4. peroxides

Rectified spirit contains:

1. 75.0 % alcohol                           2. 85.5% alcohol

3. 95.6 % alcohol                           4. 100.0% alcohol

Which is not an alcohol?

1. CH₂=CHCH₂OH                            2. CH₂OHCH₂OH

3. C₆H₅CH₂OH                                 4. C₆H₅OH

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

Glycerol on warming with excess of HI:

1. 2-iodopropane

2. 1-iodopropane

3. 1,2,3-tri-iodopropane

4. None of the above

Z$\stackrel{{\mathrm{PCl}}_5}{\to }$X$\stackrel{\mathrm{Alc}.\mathrm{KOH}}{\to }$Y$\underset{2. {\mathrm{H}}_2\mathrm{O}; \mathrm{boil}}{\overset{1. \mathrm{Conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$Z is:

1. CH₃-CH₂-CH₂-OH

2. ${\mathrm{CH}}_3-\underset{|}{\mathrm{C}}\mathrm{H}-{\mathrm{CH}}_3$
$\mathrm{OH}$

3. (C₂H₅)₃C-OH

4. CH₃-CH=CH₂

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