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Nature of meniscus for liquid having ang...

Nature of meniscus for liquid having angle of contact as `0^@` is

A

plane

B

parabolic

C

cylindrical

D

hemispherical

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The correct Answer is:
D
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Nature of meniscus for liquid of 0^(@) angle of contact

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Molecular forces exist between the molecules of a liquid in a container. The molecules on the surface have unequal force leading to a tension on the surface. If this is not compensated by a force, the equilibrium of the liquid will be a difficult task. This leads to an excess pressure on the surface. The nature of the meniscus can inform us of the direction of the excess pressure. The angle of contact of the liquid decided by the forces between the molecules, air and container can make the angle of contact. The direction of the excess pressure in the meniscus of a liquid of angle of contact 2pi//3 is

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When a cylindircal tube is dipped vertically into a liquid the angle of contact is 80^(@) . When the tube is dipped with an inclination of 40^(@) the angle of contact is :

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NIKITA PUBLICATION-SURFACE TENSION-Multiple Choice Questions (Angle of contact )
  1. A liquid will not wet the surface of a solid if the angle of contact ...

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  2. When liquid does not rises in a capillary tube , the angle of contact...

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  3. The angle of contact is obtuse when liquid

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  4. The meniscus of mercury in the capillary tube is

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  5. The angle of contact for pure water and clean glass surface is

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  6. The angle of contact between liquid and solid does not depend upon

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  7. A capillary tube of radius r is placed in a liquid I the angle of con...

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  8. The angle of contact between a solid and a liquid is a characteristic...

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  9. A water proofing agent chages the angle of contact from

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  10. Which one of the following represents correctly the variations of surf...

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  11. Nature of meniscus for liquid having angle of contact as 0^@ is

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  12. A liquid rises in a capillary tube when the angle of contact is:

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  13. When a cylindrical tube is dipped vertically into a liquid the angle o...

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  14. If the lower end of a capillary tube touches a liquid whose angle of...

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  15. The liquid meniscus in a capillary tube will be convex, if the angle o...

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  16. If a glass rod is dipped in mercury and withdrawn out, the mercury doe...

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  17. Angle of contact varies between

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  18. A glass plate is partly dipped vertically in the mercury and the angle...

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  19. The temperature of a liquid in a vessel is gradually raised the angl...

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  20. An imaginary line is a drawn in a liquid surface . At what angle with ...

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