<span>Viscosity is a property of the water which opposes the relative motion between the two surfaces of the water that are moving at different velocities. In simple terms, viscosity of water means friction between the molecules of water. Factors affecting viscosity of water 1. TemperatureTemperature strongly influences a fluid’s viscosity. Viscosity decreases with increasing temperature and vice versa. 2. PressureNormally, an increase in pressure causes viscosity to increase. 3. ConcentrationConcentration has also direct relation with the viscosity.<span> </span></span>