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Give reason why mercury does not wet gla...

Give reason why mercury does not wet glass .

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The cohesive forces among the molecules of mercury are stronger ,while the adhesive force between the molecules of mercury and glass are weak. Hence mercury does not stick and wet to glass surface .
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KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION -C (Objective Questions) (VSQs)
  1. Explain why bullets of gun are cylinder in shape ?

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  2. What is magnus effect ?

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  3. Give reason why mercury does not wet glass .

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  4. Why free surface of liquid tend to contract their surface ?

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  5. When drops of mercury are placed on a clean surfaces of glass , they m...

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  6. Give reason why are some insects able to walk on water surface ?

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  7. Why surface tension of antiseptics kept less ?

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  8. Explain why is hot soup more testy than the colder one ?

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  9. It is better to wash clothes in hot water than in cold water .Explain ...

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  10. Detergents is added to water for removing dirt from clothes.Explain .

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  11. Why colours and lubricating oil have less surface tension ?

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  12. Arrange the following liquids in increasing order of surface tension ....

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  13. If a liquid does wet the surface ,its angle of contact is acute or obt...

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  14. Liquid is stick to the glass then angle of contact for liquid glass wi...

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  15. On what factors does the value of angle of contact depend ?

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  16. How angle of contact depend on temperature ?

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  17. Why tefllon is coated ,the angle of contact between oil and non -stick...

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  18. Why raincoat does not wet in rain ?

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  19. Water rises to a height of 20 mm in a capillary . If the radius of th...

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  20. How the oil lamp produces light through a wick that is lit using a mat...

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