Lesson eLearning

Which of the following can be used to observe the effect of surface tension of water?

easy MCQ 1 mark Class 5 · EVS · Experiments with Water
  1. By pouring water over the leaf
  2. By placing a paperclip on the water surface
  3. By stirring the water vigorously
  4. By heating the water to boiling
Answer
By placing a paperclip on the water surface.

The correct answer is By placing a paperclip on the water surface. — The other options do not directly show surface tension.

Step-by-step solution

  1. Recognise that surface tension shows up when a small object stays on water.
  2. The paperclip stays on water due to surface tension.
  3. The other options do not directly show surface tension.
Common mistake: Thinking that stirring water demonstrates surface tension

Concept tested: Surface tension demonstration

Published · How this solution was prepared and checked

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