GATE 2024 AG – Question 45

Dairy and Food Engineering · Unit Operations in Dairy and Food Engineering · 2 marks · Multiple choice

Match P Bingham plastic, Q Dilatant, R Pseudoplastic, S Newtonian with 1 Viscosity increases with shear rate,2 Finite yield stress,3 Shear rate proportional to shear stress,4 Viscosity decreases with shear rate.

P–1,Q–2,R–4,S–3
P–2,Q–1,R–4,S–3
P–2,Q–4,R–1,S–3
P–4,Q–3,R–2,S–1

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Show answer and explanation

Correct answer: (B) P–2,Q–1,R–4,S–3

Explanation

Bingham materials require a yield stress before flow. Dilatants shear-thicken; pseudoplastics shear-thin. Newtonian materials have constant viscosity and a linear stress–shear-rate relation. Therefore **P–2,Q–1,R–4,S–3,B**.

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