Surface Tension(General Knowledge > General Science ) Questions and answers for exam Preparation

Question 1. The surface of water in contact with glass will in the capillary tube is

Concave
Convex
Either concave or convex
Plane

Explanation:-

Answer: Option A. -> Concave

Question 2. The force between two charges depends upon

distance between charges
wavelength
frequency
amplitude

Explanation:-

Answer: Option A. -> distance between charges

Question 3. At critical temperature surface temperature is

more than 1
exactly 1
zero
infinity

Explanation:-

Answer: Option C. -> zero

Question 4. Because of surface tension, you can put things into a full glass of water and

the water will immediately spill.
the water won't spill for quite a while.
the water will never spill.
when the water spills, whatever you put in will also spill.

Explanation:-

Answer: Option B. -> the water won't spill for quite a while.

Question 5. Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?

adhesion
surface tension
solvent properties
nonpolar

Explanation:-

Answer: Option B. -> surface tension

Question 6. Surface tension of water can be reduced by

heating
Adding soap solution
cooling
Both A & B

Explanation:-

Answer: Option D. -> Both A & B

Question 7. What is adhesion?

Water's ability to stick to itself
Water's ability to stick to other substances
The strength of the cohesion of all the water molecules combined
Tape, glue and other adhesives

Explanation:-

Answer: Option B. -> Water's ability to stick to other substances

Question 8. Which is defined as force per unit length existing at the interface between two immiscible liquids

Surface tension
Interfacial tension
Capillary action
None

Explanation:-

Answer: Option B. -> Interfacial tension

Question 9. Which one of the following is an example of capillary action

Absorption of ink
Floating of wood
Ploughing of field
Rise of oil into the wick

Explanation:-

Answer: Option D. -> Rise of oil into the wick

Question 10. If you were to investigate the effect of sugar on the surface tension of water, which approach would be the best way to conduct your experiment?

Dissolve sugar in water and drop it on a penny; count the number of drops before it spills over. Use the same sugar water mixture to repeat the experiment for a total of five trials.
Put sugar on a penny and drop tap water onto the sugar; count the number of drops before it spills over. Repeat this procedure for a total of five trials.
Drop water onto a penny until it forms a thick layer, then drop sugar grains into it until it spills over. Repeat this procedure for a total of five trials
Dissolve sugar in water and drop it on a penny; count the number of drops before spills over. Repeat the experiment for a total of five times, mixing a different amount of sugar into the water each time.

Explanation:-

Answer: Option A. -> Dissolve sugar in water and drop it on a penny; count the number of drops before it spills over. Use the same sugar water mixture to repeat the experiment for a total of five trials.