Viscosity of a liquid arises due to strong intermolecular forces existing between the molecules. Stronger the intermolecular forces,greater is the viscosity. Name the intermolecular forces existing in the following liquids and arrange them in the increasing order of their viscosities. Also give reason for the assigned order in one line.
Water,hexane $(CH_3CH_2CH_2CH_2CH_2CH_3)$,glycerine $(CH_2OHCH(OH)CH_2OH)$

(N/A) $1$. $H_2O$ and glycerine: Hydrogen bonding and dipole-dipole interactions are present due to their polar nature.
$2$. Hexane: Only weak London dispersion forces exist due to its non-polar nature.
$3$. Order of intermolecular forces: $\text{hexane} < \text{water} < \text{glycerine}$.
$4$. Since viscosity is directly proportional to the strength of intermolecular forces,the increasing order of viscosity is: $\text{hexane} < \text{water} < \text{glycerine}$.