Question

4. Mercury forms small spherical droplets, because it has no force of
________with the surface of glass.
fill in the blanks by choosing the correct option:-
( concave / adhesive). ​

Answer 1

$Answer: adhesive$

Explanation:

• generally fluids have two types of force :-
• cohesive and
• adhesive
• fluid having cohesive force does not get attached to surfaces and shrink to spherical form
• but the fluids having adhesive force get stick to the surface due to force of attraction between surface and fluid

one example of

cohesive force liquid is mercury

adhesive force liquid is fevicol

Additional information

• Cohesive forces form convex miniscus
• while adhesive force form concave miniscus