The IUPAC name of ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$ is:

Read each description given below and say whether it fits for ethanol or ethanoic acid.

(i) It is a clear liquid with a burning taste.

(ii) It is used to preserve biological specimens in laboratories.

Sugar is converted to alcohol.

(i) In the above reaction what kind of process takes place?

(ii) Which micro-organism is involved?

"Manufacture of ethyl alcohol from molasses is a good example for fermentation." Give reasons. 

Reaction of organic compound ‘A’ with ‘B’ in acidic condition gives compound ‘C’. Compound ‘B’ reacts with alkaline ${\mathrm{KMnO}}_4$ solution and gives compound ‘A’. Compound ‘C’ gives compound ‘B’ as one of the products when reacted with sodium hydroxide solution. Which of the following statements is/are correct?

I. ‘A’ is ${\mathrm{CH}}_3\mathrm{COOH}$

II. ‘B’ is ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

III. ‘C’ is ${\mathrm{CH}}_3{\mathrm{COOCH}}_2{\mathrm{CH}}_3$

IV. ‘A’ is sweet smelling substance

Describe the industrial production of ethanol from molasses under the following head: 

Chemical equation of the process 

$3 \mathrm{mL}$ of ethanol is taken in a test tube and warmed gently in a water bath. A $5 \%$ solution of alkaline potassium permanganate is added first, drop by drop to this solution, then in excess.

• How is $5 \%$ solution of ${\mathrm{KMnO}}_4$ prepared?
• State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess?
• Write a chemical equation of this reaction.

Describe the industrial production of ethanol from molasses under the following head: 

Labelled diagram 
 

Study the equation and answer the following:

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH} \stackrel{\mathrm{acidic} {\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7}{\to } {\mathrm{CH}}_3\mathrm{COOH}$

What is the role of  ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ in the above reaction?

Nominate following compounds on the basis of organic compound nomenclature system.

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH} \stackrel{\mathrm{Conc}.{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }$ Products

The products formed in the above reaction is/are