If a glass rod is dipped in mercury and withdrawn out,the mercury does not wet the rod because

  • A
    Angle of contact is acute
  • B
    Cohesion force is more
  • C
    Adhesion force is more
  • D
    Density of mercury is more

Explore More

Similar Questions

Explain why:
$(a)$ The angle of contact of mercury with glass is obtuse,while that of water with glass is acute.
$(b)$ Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently,water wets glass while mercury does not.)
$(c)$ Surface tension of a liquid is independent of the area of the surface.
$(d)$ Water with detergent dissolved in it should have small angles of contact.
$(e)$ $A$ drop of liquid under no external forces is always spherical in shape.

Why does the surface of a liquid have a tendency to minimize its area?

Surface tension of a liquid is found to be influenced by

$A$ molecule of water on the surface experiences:

Force in Column-$I$ and its use in Column-$II$ are given. Match them appropriately.
Column-$I$Column-$II$
$(a)$ Cohesive force$(i)$ Useful for writing by chalk on blackboard.
$(b)$ Adhesive force$(ii)$ Useful in soldering.
$(iii)$ Useful for formation of spherical drops of liquid.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo