Virtual Labs

Determination of surface tension of liquid using a stalagmometer.

In the stalagmometer experiment, what does the term ‘surface tension’ refer to?

a: The tension between the liquid and the tube walls b: The tension between the liquid and the air c: The tension between the liquid molecules at the surface d: The tension between the liquid and the solid surface

What happens to the height of the liquid drop in the stalagmometer as the surface tension increases?

a: It increases b: It decreases c: It remains constant d: It fluctuates

Which of the following factors does not affect the accuracy of surface tension measurement using a stalagmometer?

a: Temperature of the liquid b: Diameter of the tube c: Humidity of the environment d: Purity of the liquid

What is the significance of measuring the diameter of the tube in the stalagmometer experiment?

a: To calculate the volume of the liquid b: To determine the density of the liquid c: To adjust the surface tension value d: To use in the formula for surface tension calculation

Which of the following liquids would likely have the highest surface tension?

a: Water b: Alcohol c: Oil d: Mercury

What role does adhesion play in the formation of a liquid drop in the stalagmometer?

a: It causes the liquid to spread along the tube walls b: It causes the liquid to form a spherical drop c: It prevents the liquid from forming a drop d: It determines the color of the liquid drop

Why is it necessary to repeat the stalagmometer experiment multiple times?

a: To ensure the liquid does not evaporate b: To minimize experimental errors c: To increase the weight of the liquid d: To speed up the experiment

What would happen to the surface tension of a liquid if the temperature is increased?

a: It would increase b: It would decrease c: It would remain constant d: It would depend on the liquid

Which property of the liquid affects the rate at which the drop falls in the stalagmometer?

a: Viscosity b: Density c: Volume d: Surface area

What is the primary advantage of using a stalagmometer over other methods for measuring surface tension?

a: It is less expensive b: It requires smaller samples of liquid c: It provides direct measurement of surface tension d: It can be used for any type of liquid