Surface Energy and Surface Tension (Angle of Contact, Excess of Pressure Across a Curved Surface, Application of Surface Tension - Drops, Bubbles, and Capillary Rise...) NEET Questions

Physics - Properties of Solids and Liquids

Surface Energy and Surface Tension (Angle of Contact, Excess of Pressure Across a Curved Surface, Application of Surface Tension - Drops, Bubbles, and Capillary Rise...) MCQ Questions


7.
Which of the following increases when the surface area of a liquid increases?
A.
Surface energy
B.
Surface tension
C.
Viscosity
D.
Density
😑 View Answer Rough Work Error
ANSWER :
A. Surface energy
8.
Which law governs the relationship between excess pressure and the radius of a liquid drop?
A.
Laplace’s law
B.
Boyle’s law
C.
Charles’s law
D.
Pascal’s law
😑 View Answer Rough Work Error
ANSWER :
A. Laplace’s law
9.
What happens to the surface tension of a liquid with an increase in temperature?
A.
Decreases
B.
Increases
C.
Remains constant
D.
Becomes zero
😑 View Answer Rough Work Error
ANSWER :
A. Decreases
10.
Specific heat capacity is defined as:
A.
The amount of heat required to raise the temperature of 1 kg of a substance by 1°C
B.
The total heat content of a body
C.
The heat required to change the state of a substance
D.
The energy required to break chemical bonds
😑 View Answer Rough Work Error
ANSWER :
A. The amount of heat required to raise the temperature of 1 kg of a substance by 1°C
11.
Which material has a high specific heat capacity?
A.
Mercury
B.
Copper
C.
Iron
D.
Water
😑 View Answer Rough Work Error
ANSWER :
D. Water
12.
Calorimetry is used to measure:
A.
Magnetic permeability
B.
Electrical resistance
C.
Optical density
D.
Heat exchange during chemical reactions
😑 View Answer Rough Work Error
ANSWER :
D. Heat exchange during chemical reactions