Group I contains the types of fluids while group II contains the shear stress – rate of shear relationship of different types of fluids, as shown in the figure.

$$\begin{array}{clcl} {} & \underline{\text{Group I}} & {} & \underline{\text{Group II}} \\ P. & \text{Newtonian fluid} & 1. & \text{Curve 1} \\ Q. & \text{Pseudo plastic fluid} & 2. & \text{Curve 2} \\ R. & \text{Plastic fluid} & 3. & \text{Curve 3} \\ S. & \text{Dilatant fluid} & 4. & \text{Curve 4} \\ {} & {} & 5. & \text{Curve 5} \end{array}$$

The correct match between Group I and Group II is

1. $P-2, Q-4, R-1, S-5$
2. $P-2, Q-5, R-4, S-1$
3. $P-2, Q-4, R-5, S-3$
4. $P-2, Q-1, R-3, S-4$