By adding soluble impurity in a liquid, angle of contact (a) decreases (b) increases (c) remains unchanged (d) first increases and then decreases

Answer: (a). A soluble impurity (like detergent) increases wetting, so the angle of contact decreases. So the answer is (a) decreases.

By adding soluble impurity in a liquid, angle of contact | MHT CET 2023 (14 May, Shift 1)

Q41MHT CET 2023 · 14 MAY · SHIFT 1Easy

Angle of Contact & Capillarity

By adding soluble impurity in a liquid, angle of contact

Show answer and solution

Answer: (a)

A soluble impurity (like detergent) increases wetting, so the angle of contact decreases.
So the answer is (a) decreases.

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