Correct Answer - Option 3 : Thixotropic substance
Concept:
Newtonian Fluids:
The fluids which obey Newton’s Law of viscosity i.e. shear stress is directly proportional to velocity gradient are called Newtonian Fluids.
Examples: Water, air, Petrol, Kerosene, and Mercury.
Non- Newtonian fluids:
The fluids which do not follow Newton’s law of viscosity are called Non- Newtonian fluids.
They are further divided as shown below tabulated form:
Fluid type (Non-Newtonian)
|
Examples
|
Dilatants Fluids
|
Butter, Quick Sand, Sugar in water
|
Pseudoplastic fluids
|
Paints, Lipstick, Blood, milk
|
Thixotropic
|
Printers ink, Enamels
|
Rheopatic fluids
|
Gypsum solution in water, Bentonite Solution
|
Bingham Plastic Fluid
|
Sewage sludge, Toothpaste, Drilling mud, Gel
|