JEE Main · 2024 · 27 Jan 2024 · Shift 1 · Fluid Mechanics

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Given below are two statements :
Statement (I) :Viscosity of gases is greater than that of liquids.
Statement (II) : Surface tension of a liquid decreases due to the presence of insoluble impurities.
In the light of the above statements, choose the most appropriate answer from the options given below :

(A)Statement I is correct but statement II is incorrect
(B)Statement I is incorrect but Statement II is correct✓ Correct
(C)Both Statement I and Statement II are incorrect
(D)Both Statement I and Statement II are correct

Answer: (B)

Solution

Statement I is false: gases have lower viscosity than liquids, not greater.

Statement II is true: insoluble impurities (e.g. detergents) disrupt the surface layer's intermolecular forces and lower surface tension.

JEE Main · 2024 · 27 Jan 2024 · Shift 1 · Single correct option

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