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A mercury drop does not spread on a glas...

A mercury drop does not spread on a glass plate because the angle of contact between glass and mercury is

A

Acute

B

Obtuse

C

zero

D

`90^(@)`

Text Solution

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The correct Answer is:
B
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Water rises up in a glass capillary upto a height of 9.0cm , while mercury falls down by 3.4 cm in the same capillary. Assume angles of contact for water glass and mercury glass 0^(@) and 135^(@) respectively. Determine the ratio of surface tension of mercury and water (cos 135^(@)=-0.71) .

ERRORLESS -SURFACE TENSION-Exercise
  1. When the temperature increased the angle of contact of a liquid

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  2. The angle of contanct between glass and mercury is

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  3. A mercury drop does not spread on a glass plate because the angle of c...

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  4. A liquid is coming out from a vertical tube. The relation between the ...

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  5. The parts of motor cars are polished by chromium because the angle of ...

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

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

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  8. If a water drop is kept between two glass plates, then its shape is

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  9. The value of contact angle for kerosene with solid surface.

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  10. Nature of meniscus for liquid of 0^(@) angle of contact

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  11. A liquid wets a solid completely. The meniscus of the liquid in a suff...

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  12. What is the shape when a non-wetting liquid is placed in a capillary t...

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  13. For which of the two pairs, the angle of contact is same

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  14. If the surface of a liquid is plane, then the angle of contact of the ...

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  15. A soap bubble assumes a spherical surface. Which of the following stat...

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  16. If two soap bubbles of different radii are connected by a tube

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  17. The surface of soap solution is 25xx10^-3Nm^-1. The excess pressure in...

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  18. Prove that if two bubbles of radii r(1) and r(2)(r(1)ltr(2)) come in c...

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  19. The excess pressure due to surface tension in a spherical liquid drop ...

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  20. A long cylinderical glass vessel has a small hole of radius r at its b...

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