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Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion

Discussion Forum : Hydraulics and Fluid Mechanics - Section 6 (Q.No. 36)
Hydraulics and Fluid Mechanics
36.
The mercury does not wet the glass. This is due to the property of the liquid known as
cohesion
adhesion
viscosity
surface tension
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
33 comments Page 2 of 4.
Meet said:   7 years ago
The surface tension is due to cohesion only and in question 'PROPERTY OF FLUID' (cohesion is FORCE)is asked. So the answer is surface tension.
Mohit said:   7 years ago
It should be A.
Gautam makwana said:   7 years ago
@Meet.

Cohesion, adhesion, and surface tension are properties of capillarity. But the answer should be Cohesion.
Anuj kumar said:   7 years ago
Mercury does not wet glass - the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass.
Karun said:   7 years ago
No, adhesion is correct because water posses both cohesion and adhesion property. And HG posses only cohesion.
Harpreet said:   7 years ago
It's a matter of surface tension. The surface tension of the liquid, and the surface tension of the glass, determine how far a liquid will "spread" on the glass.

Mercury has a high surface tension, which maintains its spherical shape. Water has a much lower surface tension.
Goutham said:   7 years ago
Liquid property is surface tension and due to liquid character is cohesion.
Ram said:   7 years ago
When it is asking about property, it is surface tension. If it is asking about force then it is cohesive force, because cohesion and adhesion are the molecular attractive forces.
Tanveer said:   7 years ago
Yes, surface tension is due to cohesion only. So, both A&D are correct answer.
Anomie said:   6 years ago
No, mercury does not wet the glass because it is metal.
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