Question

Match List-1 (Definitions) with List-2 (properties) and select the correct answer using the codes given below the lists:
List-1
A. Newtonian fluid
B. Ideal fluid
C. Thixotropic fluid
D. Rheological fluid

List-2
1. Frictionless and incompressible
2. Viscosity is invariant with shear stress
3. Viscosity increases at higher shear stress
4. Viscosity decreases at higher shear stress

• A. A-2, B-4, C-1, D-3
• B. A-3, B-1, C-4, D-2
• C. A-2, B-1, C-3, D-4
• D. A-3, B-4, C-1, D-2

Answer 1

The correct option is C A-2, B-1, C-3, D-4

For thixotropic fluid $\tau ={\tau }_0+\mu {\left(\frac{du}{dy}\right)}^{n}n<1$

As shear stress $\tau$ increases viscosity increases with higher rates of shear strain.