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The surface of a liquid has tendency to...

The surface of a liquid has tendency to contract and minimise surface area . This tendency is due to

A

viscosity

B

elasticity

C

friction

D

surface tension

Text Solution

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The correct Answer is:
D
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Surface tension of a liquid is a molecular phenomenon of liquids involving the force of cohension along the liquid molecules. It is scalar quantity and is numberically equal to the surface energy. Numerically, it is proved that the potential soluble salts and surfce active substance. Sparingly soluble salts and surface acitve substances decrease the surface tension of the liquid. However, the fairly soluble solutes increase the surface tension of the liquid. Surface tension of a liquid is independent of surface area but it depends on the intemolecular forces and the temperature. Which among the following is not the unit of surface tension ?

NIKITA PUBLICATION-SURFACE TENSION-Multiple Choice Questions (Surface tension )
  1. The effect of surface tension causes

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  2. When soap solution dissolves in water , then the surface tension of s...

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  3. The surface of a liquid has tendency to contract and minimise surface...

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  4. A drop of oil is placed on the surface of water. Which of the followin...

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  5. The surface tension of liuid at its boiling point

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  6. At critical temperature, the surface tension of a liquid

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  7. Which of the following have same dimensional formula as that of the s...

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  8. A brush is dipped in water and removed . The hair of the brush cling ...

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  9. The surface tension of water at freezing point is

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  10. What make it difficult to separate two glass sheets having a drop of ...

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  11. When a small quantity of soluable impurity is added to water , then i...

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  12. When a small quantity of partially soluable impurity is added to wa...

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  13. When sugar is added to water , then surface tension of sugar solution ...

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  14. If the surface tension of a rectangular soap film is T and length l , ...

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  15. If there is no difference of pressure on the two sides of the surface,...

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  16. The molecular forces are

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  17. Two pieces of glass plate one upon the other with a little water betwe...

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  18. The surface energy is numerically equal to

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  19. The surface tension of molten cadmium with increase of temperature gen...

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  20. Two wooden sticks of negliable weight are floating parallel to each o...

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