Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 6 (Q.No. 36)
36.
The mercury does not wet the glass. This is due to the property of the liquid known as
Discussion:
33 comments Page 2 of 4.
Kameswari bolem said:
6 years ago
I think option A is correct. Capillarity is the property of both cohesion and adhesion. But surface tension is due to cohesion only it does not involve adhesion. As cohesive force is higher than adhesion in mercury it does not wet the glass.
Arvind said:
6 years ago
D is the correct option because the wetting and non-wetting phenomenon is due to cohesion and adhesion.
Prateek Ghosh said:
6 years ago
The Right answer is (A) Cohesion.
Anomie said:
6 years ago
No, mercury does not wet the glass because it is metal.
Tanveer said:
7 years ago
Yes, surface tension is due to cohesion only. So, both A&D are correct answer.
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.
Goutham said:
7 years ago
Liquid property is surface tension and due to liquid character is 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.
Mercury has a high surface tension, which maintains its spherical shape. Water has a much lower surface tension.
Karun said:
7 years ago
No, adhesion is correct because water posses both cohesion and adhesion property. And HG posses only 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.
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