621.

Correct acidic order of the following compounds is

                        

• i > ii> iii

• iii> i> ii

• ii> iii> i

• i> iii> ii

Identify Z in the following series

C₂H₅OH $\stackrel{{\mathrm{PBr}}_3 }{\to } \mathrm{X} \stackrel{\mathrm{alc}. \mathrm{KOH}}{\to } \mathrm{Y}\hspace{0.17em}\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}, \mathrm{Heat}}{\overset{\left(\mathrm{i}\right) {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }} \mathrm{Z}$

• CH₂ = CH₂

• CH₃-CH₂OH

• CH₃-CH₂-O-CH₂-CH₃

• None of the above

The following compounds have identical molecular weight. Which would have the lowest boiling point?

• 2-butanol

• 2-methyl-1-propanol

• 1, 1-dimethyl ethanol

• 1-methoxypropane

CO₂ acts as electrophile in which reaction?

• Williamson's reaction

• Kolbe reaction

• Perkin's reaction

• Reimer-Tiemann reaction

Except one, the other three are isomers, find odd man out

ethanol	oxiran	oxitane	vinyl alcohol
(1)	(2)	(3)	(4)

• vinyl alcohol

• ethanol

• oxiran

• oxitane

A compound that undergoes bromination easily is

• toulene

• benzoic acid

• phenol

• benzene

Glycerol, ethanol, glycol and methanol have same price per kilogram. Which liquid will be cheaper in preparing antifreeze,solution for automobile radiators?

• Methanol

• Ethanol

• Glycol

• Glycerol

Which of the following combinations can be used to synthesise ethanol?

• CH₃MgI and CH₃COCH₃

• CH₃MgI and C₂H₅OH

• CH₃MgI and CHCH₃COOC₂H₅

• CH₃MgI and HCOOC₂H₅

Cumene process is the most important commercial method for the manufacture of phenol. Cumene is

• 1-methyl ethyl benzene

• ethyl benzene

• vinyl benzene

• propyl benzene

A gas formed by the action of alcoholic KOH on ethyl iodide, decolourises alkaline KMnO₄. The gas is

• C₂H₆

• CH₄

• C₂H₂

• C₂H₄