CH₃ CH (OH) CH₂CH₃
2R-OH+ 2Na ⟶ 2RONa + H₂ ↑
2 moles of alcohol gives 1 mole of H₂ which occupies 22.4 L at 273 K and 1 atm number of moles of alcohol
= 2 moles of R -OH/22.4L of H₂ x 560 ml
= 0.05 moles
No of moles = mass/molar mass = m/M
= 3.7/0.05 = 74 g mol^-1
General formula for (R-OH) Cn H_{2n + 1}OH
n(12) + (2n + 1) (1) + 16 + 1 = 74
14n = 74 - 18
14n = 56
n = 56/14 = 4
The  "2" alcohol which contains 4 carbon is CH₃ - CH (OH) CH₂ - CH₃

Oxidation of glycerol with Br₂/H₂O (or) NaOBr (or) Fenton reagent (FeSO₄ + H₂O₂) gives a mixture of glyceraldehyde and dihydroxy acetone (This mixture is named as glycerose).

When ethylene glycol is treated with cone. H₂SO₄ two molecules of water are removed and the product formed is dioxane.

Ethers having same molecular formula, but alkyl groups attached to the oxygen atom are different. This phenomenon is known as metamerism.
Metamers of 2- methoxy propane
\(\mathrm{C}_{2} \mathrm{H}_{5}-\mathrm{O}-\mathrm{C}_{2} \mathrm{H}_{5}-\) diethyl ether 
\(\mathrm{CH}_{3}-\mathrm{O}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CH}_{3}\) methyl n-propyl ether

When glycerol is heated with dehydrating agents such as Con H₂SO, KHSO₄ etc .... , it undergoes dehydration to form acrolein.

(i) In this method, dimethyl sulfoxide (DMSO) is used as the oxidising agent, which converts alcohols to ketones aldehydes.
(ii) In this method an alcohol is treated with DMSO and oxalyl chloride followed by the addition of triethylamine.

Victor Meyer's test:
This test is used to distinguish 1°, 2°, and 3° alcohols.
This test consists of the following steps:
(i) Alcohol is converted into alkyl iodide by treatment with P/I₂.
(ii) The alkyl iodide is then converted into nitro alkane by silver nitrate (AgNO₂).
(iii) The nitro alkane is treated with nitrous acid (HNO₂) and then with aqueous KOH.
(iv) The 1°,2° and 3° alcohols are identified from the colour of the product.