Tag: introduction to alcohols - ethanol

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Multiple choice chemistry carbon and its compounds some important carbon compounds ethanol and ethanoic acid introduction to alcohols - ethanol

Ethanol is:

  1. ionic compound

  2. noble gas

  3. polar covalent compound

  4. non-polar covalent compound
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ethanol can be written as $CH _3-CH _2-OH$. The oxygen atom in the hydroxyl ($OH$) group is highly electronegative and hence attracts the electrons towards itself. Thus, ethanol is a polar compound with its electrons more towards the oxygen atom. Although ($C _2H _5$) group is non polar.

All the bonds in ethanol are covalent in nature. The bonds are formed by sharing of electrons between the atoms.
Thus, option $C$ is the correct answer.

Multiple choice chemistry carbon and its compounds some important carbon compounds ethanol and ethanoic acid introduction to alcohols - ethanol

Which method is used to get pure ethanol?

  1. Membrane technology

  2. Esterification

  3. Fermentation

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In industrial method, to obtain 100% pure alcohol, a small quantity of benzene is added to rectified spirit and the mixture is then distilled. Absolute alcohol is obtained in third fraction that distills over at 78.2°C (351.3 K).

None of the given method is correct. 

Option D is the answer.