Q1: Water belongs to

ANS:A - Newtonian fluids

Water belongs to the category of Newtonian fluids. Newtonian fluids are characterized by having a constant viscosity, meaning their flow behavior remains consistent regardless of the applied shear stress or shear rate. Water, along with many other common fluids like air and most oils, exhibits Newtonian behavior under normal conditions. In other words, their viscosity doesn't change with the magnitude of the applied force or stress. Non-Newtonian fluids, on the other hand, have a variable viscosity that depends on the applied stress or shear rate. Examples of non-Newtonian fluids include ketchup, toothpaste, blood, and many others. Water is not a compressible fluid in normal conditions, as its density remains relatively constant even under changes in pressure. Compressible fluids are those in which changes in pressure significantly affect the density of the fluid, such as gases like air or steam at high pressures. Therefore, the correct category for water is Newtonian fluids.