General Science

SURFACE TENSION MCQs

Total Questions : 21

Page 1 of 3 pages
Question 1. The surface of water in contact with glass will in the capillary tube is
  1.    Concave
  2.    Convex
  3.    Either concave or convex
  4.    Plane
 Discuss Question
Answer is Option A. -> Concave
Question 2. The force between two charges depends upon
  1.    distance between charges
  2.    wavelength
  3.    frequency
  4.    amplitude
 Discuss Question
Answer is Option A. -> distance between charges
Question 3. At critical temperature surface temperature is
  1.    more than 1
  2.    exactly 1
  3.    zero
  4.    infinity
 Discuss Question
Answer is Option C. -> zero
Question 4. Because of surface tension, you can put things into a full glass of water and
  1.    the water will immediately spill.
  2.    the water won't spill for quite a while.
  3.    the water will never spill.
  4.    when the water spills, whatever you put in will also spill.
 Discuss Question
Answer is 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?
  1.    adhesion
  2.    surface tension
  3.    solvent properties
  4.    nonpolar
 Discuss Question
Answer is Option B. -> surface tension
Question 6. Surface tension of water can be reduced by
  1.    heating
  2.    Adding soap solution
  3.    cooling
  4.    Both A & B
 Discuss Question
Answer is Option D. -> Both A & B
Question 7. What is adhesion?
  1.    Water's ability to stick to itself
  2.    Water's ability to stick to other substances
  3.    The strength of the cohesion of all the water molecules combined
  4.    Tape, glue and other adhesives
 Discuss Question
Answer is 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
  1.    Surface tension
  2.    Interfacial tension
  3.    Capillary action
  4.    None
 Discuss Question
Answer is Option B. -> Interfacial tension
Question 9. Which one of the following is an example of capillary action
  1.    Absorption of ink
  2.    Floating of wood
  3.    Ploughing of field
  4.    Rise of oil into the wick
 Discuss Question
Answer is 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?
  1.    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.
  2.    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.
  3.    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
  4.    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.
 Discuss Question
Answer is 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.