The viscosity of the given substances in order of increasing viscosity is: water, n-hexane, mineral oil, and glycerol.
Viscosity is generally affected by the size and shape of the molecules in a fluid. In general, longer chains and larger molecules tend to have higher viscosities. For example, glycerol has a higher viscosity than n-hexane because its molecules are larger and more complex. Similarly, mineral oil has a higher viscosity than n-hexane because it is made up of larger, more complex hydrocarbon molecules. However, there are many other factors that can affect viscosity, including temperature, pressure, and the presence of other substances.