Question

Match the LIST-I with LIST-II 

LIST-I		LIST-II
(Fluid)		(Typical example)
A	Shear-thinning	I	Tomato ketchup
B	Newtonian	II	Milk
C	Shear-thickening	III	Whipped cream
D	Bingham plastic	IV	40% raw corn starch solution

• A. A - I, B - IV, C - II, D - III
• B. A - I, B - II, C - IV, D - III
• C. A - III, B - II, C - IV, D - I
• D. A - I, B - II, C - III, D - IV

Hint:

Think about real-world examples: Ketchup gets \textbf{thinner} when you shake it (shear-thinning). A cornstarch-water mix gets \textbf{thicker} when you stir it fast (shear-thickening). Toothpaste needs a push to start flowing (Bingham plastic).

Answer 1

The Correct Option is B

Step 1: Define the fluid behaviors.
A. Shear-thinning (Pseudoplastic): Viscosity decreases as shear rate increases. Shaking or stirring makes it flow more easily. Tomato ketchup is a classic example. So, A-I.
B. Newtonian: Viscosity is constant regardless of shear rate. Milk (and water) behaves approximately as a Newtonian fluid. So, B-II.
C. Shear-thickening (Dilatant): Viscosity increases as shear rate increases. It becomes thicker when stirred or hit. A concentrated corn starch solution is the prime example. So, C-IV.
D. Bingham plastic: Behaves as a rigid solid at low stress but flows like a viscous fluid at high stress. It has a "yield stress". Whipped cream, toothpaste, and mayonnaise are examples. So, D-III.
The correct set of matches is A-I, B-II, C-IV, D-III.