Question

Oil flows upward in the wick of a lantern because of the liquid property called
A. density.
B. meniscusity.
C. viscosity.
D. capillarity.

Answer 1

Oil flows upward in the wick of a lantern because of the liquid property called  capillarity.
Final answer: D

Answer 2

Answer: Option (D) is the correct answer.

Explanation:

In a liquid, when an attractive force is exerted on the surface molecules by the inner molecules then there will be molecules in bulk on the surface of liquid. Due to this, the liquid acquires the shape having the least surface area. This is known as surface tension.

Whereas when a liquid rises  in the upward direction due to surface tension and resists any external force then this action is known as capillary action.

Thus, we can conclude that oil flows upward in the wick of a lantern because of the liquid property called capillarity.