Arrange water, methanol and dimethyl ether in increasing order of their viscosity and give reasons in favour of that order.

Explanation

Greater the extent of intermolecular H-bonding, greater is the intermolecular attraction among different layers and hence, greater is the viscosity of the compound. Water molecules having two -OH groups have greater intermolecular H-bonding than methanol `(CH_(3)OH)` molecules having only one -OH group. dimethyl ether `(CH_(3)OCH_(3))` having no-OH group do not remain associated through H-bonding. therefore, the viscosity of these liquids follows the order: dimethyl ether`lt`methanol`tl`water.