Surface Tension -Multiple Choice Questions Quiz

Interactive MCQs on “Surface Tension”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is surface tension?

(a) The tendency of a liquid to evaporate
(b) The force that pulls objects downward towards the center of the Earth
(c) The resistance of a liquid to flow
(d) The elastic property of the surface of a liquid that minimizes its surface area

Question 2: What unit is used to measure surface tension?

(a) Newtons per meter (N/m)
(b) Joules per kilogram (J/kg)
(c) Meters per second (m/s)
(d) Kilograms per cubic meter (kg/m³)

Question 3: Which of the following factors affects the surface tension of a liquid?

(a) Temperature
(b) Volume
(c) Color
(d) Density

Question 4: What causes surface tension in liquids?

(a) The gravitational force acting on the liquid molecules
(b) The cohesive forces between liquid molecules
(c) The repulsive forces between liquid molecules
(d) The random motion of liquid molecules

Question 5: What shape does a liquid droplet take due to surface tension?

(a) Spherical
(b) Cylindrical
(c) Cuboid
(d) Conical

Question 6: Which of the following factors would increase the surface tension of a liquid?

(a) Increasing the temperature
(b) Adding a surfactant
(c) Decreasing the volume
(d) Reducing the density

Question 7: How does surface tension enable certain insects to walk on water?

(a) Surface tension creates an upward force on the insects.
(b) Surface tension increases the density of water.
(c) Surface tension decreases the viscosity of water.
(d) Surface tension prevents the insects from sinking by supporting their weight.

Question 8: What happens to the surface tension of a liquid if it becomes more viscous?

(a) Surface tension decreases.
(b) Surface tension increases.
(c) Surface tension remains the same.
(d) Surface tension becomes zero.

Question 9: What is the phenomenon called when a liquid rises in a narrow tube against the force of gravity due to surface tension?

(a) Capillary action
(b) Buoyancy
(c) Gravitational pull
(d) Viscosity

Question 10: What happens to the meniscus in a capillary tube when the liquid's adhesive forces with the tube are stronger than its cohesive forces?

(a) The meniscus becomes concave.
(b) The meniscus becomes convex.
(c) The meniscus remains flat.
(d) The meniscus disappears.