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In common names monohydric alcohols are called as  alkyl alcohols

CH3 OH  –  Methyl Alcohol

CH3 CH2 OH  –  Ethyl alcohol

CH3 CH2 CH2 CH2 CH2 OH  –   Pentyl alohol

Pentyl Alcohol

For dihydric alcohols:-

The a – glycols are named by adding the word glycol to the name of alkene

For example:-

OH – CH2 – CH2 –OH

Ethylene glycol

Ethylene glycol


Important Question Answers

Question 1 Give the IUPAC name of following:-


IUPAC name of Alcohols


(i) Hexan-2, 3-diol

(ii) Ethanol or Eth–1–en-1–ol

(iii) Butan–2–ol

(iv) 2–MethylButan–2–ol

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Class 12 Chem Alcohols, Phenols and Ethers All Topics Notes Class 12 Chemistry All Chapter Notes