Surface Tension MCQ Quiz - Multiple Choice Questions & Answers

1. A liquid does not wet the surface of a solid if the angle of contact is

1. Zero
2. An acute one
3. 45 degree
4. An obtuse one

2. By which phenomenon does the water rise from roots to leaves of plants

1. Capillary action
2. Surface Tension
3. Bernoullis Theorem
4. Viscosity

3. Excess pressure inside a bubble of radius r and of a liquid of surface tension T is

1. T/r
2. 2T/r
3. 3T/r
4. 4T/r

4. For a liquid which is rising in a capillary, he angle of contact is

1. Obtuse
2. Acute
3. 180 degree
4. 90 degree

5. For a water does not wet a glass rod, the angle of contact is

1. Obtuse
2. Acute
3. 0 degree
4. 90 degree

6. If drops and bubbles do not collapse under the effect of gravity, it indicates that

1. pressure inside the drop is greater than outside
2. pressure inside the drop is lower than outside it
3. Surface tension is low
4. Viscosity is large

7. In case of water and glass, we get a concave meniscus because the adhesive force between water and glass are ...........than the cohesive forces between water molecules.

1. Weaker
2. Stronger
3. Same
4. None of the mentioned

8. In flow field, point exist at surface of object where fluid is brought to rest by object is called

1. field point
2. surface point
3. stagnation point
4. object point

9. Meniscus of mercury in capillary is

1. Concave
2. Convex
3. Plane
4. Cylindrical

10. On increasing the temperature, the kinetic energy of the liquid molecules

1. Increases
2. Decreases
3. Remains constant
4. None of the mentioned