Question

A water drop is spherical in shape due to ____________

(a) Viscosity

(b) Poise

(c) Surface tension

(d) Reflection

This question was posed to me in an internship interview.

This is a very interesting question from States of Matter topic in chapter States of Matter of Chemistry – Class 11

Answer 1

Right option is (c) Surface tension

For explanation I would say: Surface Tension is the tendency of a fluid to occupy least surface area as possible. It is defined as the force per unit distance. So, the spherical shape that is acquired by a water drop is due to surface tension.