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


13.
What is the unit of specific heat capacity in the SI system?
A.
W/m²
B.
N/m
C.
Pa·s
D.
J/kg·K
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ANSWER :
D. J/kg·K
14.
Latent heat is associated with:
A.
Decrease in temperature of a gas
B.
Increase in temperature of a solid
C.
Phase change of a substance without a temperature change
D.
Increase in volume of a liquid
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ANSWER :
C. Phase change of a substance without a temperature change
15.
What is the unit of latent heat in the SI system?
A.
Pa·s
B.
N/m²
C.
J/kg
D.
W/m
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ANSWER :
C. J/kg
16.
The latent heat of fusion is:
A.
The heat released during condensation
B.
The heat required to change a liquid into a gas
C.
The heat required to change a solid into a liquid
D.
The heat required for chemical reactions
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ANSWER :
C. The heat required to change a solid into a liquid
17.
During the change of state from liquid to gas, the temperature of the substance:
A.
Remains constant
B.
Increases continuously
C.
Decreases continuously
D.
Becomes zero
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ANSWER :
A. Remains constant
18.
Which method of heat transfer does not require a medium?
A.
Radiation
B.
Conduction
C.
Convection
D.
Sublimation
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ANSWER :
A. Radiation