Surface Tension of Water by Capillary Rise and Effect of Detergents NEET Questions

Surface Tension of Water by Capillary Rise and Effect of Detergents MCQ Questions

1.
Surface tension of a liquid is defined as:
A.
Force per unit volume
B.
Force per unit area
C.
Force per unit length
D.
Force per unit mass
ANSWER :
C. Force per unit length
2.
SI unit of surface tension is:
A.
N/m
B.
J/m²
C.
N/m²
D.
Watt/m²
ANSWER :
A. N/m
3.
Capillary rise in a liquid is due to:
A.
Viscosity
B.
Surface tension
C.
Gravity
D.
Buoyancy
ANSWER :
B. Surface tension
4.
The rise of liquid in a capillary tube depends on:
A.
Density only
B.
Radius of the tube only
C.
Both radius and density
D.
None of the above
ANSWER :
C. Both radius and density
5.
Which of the following factors affects the surface tension of a liquid?
A.
Pressure
B.
Temperature
C.
Volume
D.
Shape of container
ANSWER :
B. Temperature
6.
The rise of water in a capillary tube is due to:

NEET - 2015

A.
Surface tension
B.
Capillary action
C.
Gravitational force
D.
Buoyant force
ANSWER :
A. Surface tension