Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 1 (Q.No. 1)
The fluid property, due to which, mercury does not wet the glass is
surface tension
Answer: Option
No answer description is available. Let's discuss.
43 comments Page 1 of 5.

RAJKUMAR PEGU said:   1 year ago
The correct answer is Cohesion.

Dhanush said:   2 years ago
Surface tension is a property that arises due to the intermolecular forces of attraction among the molecules of the liquid. In the case of mercury taken in a glass tube, adhesive forces are weaker than cohesive forces. So, the mercury molecule does not wet the glass.

Ashitosh Kopurwad said:   5 months ago
Mercury is highly cohesive so it has a very high force of attraction between similar molecules. So mercury doesn't wet the glass.

Santosh said:   11 months ago
I think Cohesion is the correct answer.

Jdp said:   2 months ago
In the case of Mercury, if we put a tube inside the beaker full of mercury then the level of mercury in the tube will fall and the tube doesn't get wet because cohesive force is more than adhesive force. This property is called adhesion.

Nilesh said:   3 years ago
Mercury does not wet glass - the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass. When liquid mercury is confined in a tube, its surface (meniscus) has a convex shape because the cohesive forces in liquid mercury tend to draw it into a drop.

Mishree Lal said:   3 years ago
Surface tension is correct. I agree.

Rimsha said:   3 years ago
Adhesive forces are right.

Ramodh kr Gautam said:   2 years ago
Yes, Adhesive forces are right.

Suraj said:   3 years ago
Mercury does not wet the glass because the cohesive force with the drops is stronger than the adhesive force between the drops and glass.

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