Consider following statements:

Physics Fluid Mechanics JEE Main 2025 - ( Mechanical Properties of Fluids ) MCQ (Single Correct)

Surface tension arises due to extra energy of the molecules at the interior as compared to the molecules at the surface, of a liquid. C, D, E Only

As the temperature of liquid rises, the coefficient of viscosity increases. A, D, E Only

As the temperature of gas increases, the coefficient of viscosity increases B, C, D Only

The onset of turbulence is determined by Reynold's number. (E) In a steady flow two stream lines never intersect. Choose the correct answer from the options given below:
A, B, C Only

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The correct answer is:

Surface tension arises due to extra energy of the molecules at the molecules at the surface

as compared at the interior of a liquid. The coefficient of viscosity for a liquid decreases with rise in temperature where as it increases for gases with increase in temperature. The flow is turbulent for a Reynold's number greater than 2000. Stream lines never intersect in a steady flow.

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