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Class 11
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Surface Tension
Surface Tension
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1)
Why are rain drops spherical in shape?
Downward movement.
Acceleration due to gravity.
Capillarity.
Surface tension.
2)
The force of cohesion is maximum in ________.
Liquids
Ideal gas
Solids
Gases
3)
Which of the following liquids show capillary depression?
None of these.
Glycerine
Water
Mercury
4)
Where do we find adhesive force?
Between polar molecules.
Between similar molecules.
All of the above.
Between different molecules.
5)
Choose the correct statement.
The S.I. unit of surface tension is N/m.
All of the above.
Cohesive force of mercury is larger than that of water.
Water sticks to the glass of windows due to adhesion.
6)
Liquids which have more adhesive force than cohesive force show ________.
Concave meniscus
Convex meniscus
Plane meniscus
No fixed shape
7)
What is the angle of contact for water and glass?
0⁰
8⁰
180⁰
90⁰
8)
What happens in the capillary rise of a liquid, when the radius of the capillary tube increases?
Remains unchanged.
Decreases.
Increases.
Become zero.
9)
When there are no external forces, what is the shape of a liquid drop determined by?
Viscosity.
Gravitational force.
Surface tension.
None of these.
10)
If the angle of contact between a solid and a liquid is 90⁰, then:
Cohesive force >> adhesive force
Cohesive force = adhesive force
Cohesive force > adhesive force
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Cite this Simulator:
amrita.olabs.edu.in,. (2015). Surface Tension. Retrieved 17 December 2018, from amrita.olabs.edu.in/?sub=1&brch=5&sim=224&cnt=540
