Question

Choose the statement not related to capillarity from the following 

1. In an oil lamp, oil reaches the end of wick due to capillarity

2. The root hairs of a plant draws water from earth due to capillary action

3. The small insects walk on the surface water 

4. Water is retained in a sponge 

1. Both 2 and 4
2. Only 3
3. Both 1 and 4
4. Only 4

Answer 1

Correct Answer - Option 2 : Only 3

CONCEPT: 

• Capillarity is the process in which the liquid either ascend or descend  while placed in contact with any solid surfaces like tubes 
• Capillarity occurs due to adhesive and cohesive forces.
• Surface tension is the tendency of liquid to shrink the surface area to a minimum

EXPLANATION:

• From the given options except for the third option, all the other options can be explained using capillarity 
• Hence, option 3  is the answer