Question : Oil raises the wick in a lamp because
Option 1: Oil is very light.
Option 2: Of the diffusion of oil through wick
Option 3: Of the surface tension phenomenon
Option 4: Of the capillary action phenomenon
Correct Answer: Of the capillary action phenomenon
Solution : The answer is the capillary action phenomenon .
The capillary action phenomenon causes oil to rise in the lamp's wick. Molecules in this liquid flow through the narrow gaps in a wick without the assistance of an outside force. The intermolecular interactions between solid and liquid molecules facilitate this movement.
SSC CGL Complete Guide
Candidates can download this ebook to know all about SSC CGL.