A mercury drop does not spread on a glass pla | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The angle of contact is the angle between the tangent to the liquid surface at the point of contact and the solid surface inside the liquid. For a

Vedclass · Accepted Answer

Obtuse

Vedclass · Answer

(B) The angle of contact is the angle between the tangent to the liquid surface at the point of contact and the solid surface inside the liquid. For a liquid that does not wet the solid surface,the cohesive forces between liquid molecules are stronger than the adhesive forces between the liquid and solid molecules. In the case of mercury and glass,the angle of contact is approximately $135^\circ$ to $140^\circ$,which is an obtuse angle. Because the angle of contact is obtuse,the mercury drop tends to minimize its contact area with the glass,causing it to remain as a drop rather than spreading.

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

Similar Questions

The parts of motor cars are polished by chromium because the angle of contact between water and chromium is

For which of the two pairs,the angle of contact is the same?

Why is Teflon coated on non-stick frying pans? Explain.

The raincoats are made waterproof by coating them with a material,which ............

Give reason: The wing of a duck does not get wet in water.

Vedclass Test Series

Exam Paper Generator

Online Exam Module