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Heat Transfer
  • 1. Which method of heat transfer does not require a physical medium?
A) Radiation
B) Convection
C) Advection
D) Conduction
  • 2. What is the process of heat transfer through direct contact of particles?
A) Entropy
B) Conduction
C) Convection
D) Radiation
  • 3. What is the transfer of heat through the motion of fluid particles?
A) Conduction
B) Convection
C) Entropy
D) Radiation
  • 4. Which heat transfer method occurs in fluids due to density differences?
A) Natural convection
B) Conduction
C) Forced convection
D) Radiation
  • 5. What determines the rate of heat transfer in conduction?
A) Sound intensity and surface area
B) Temperature difference and material properties
C) Pressure difference and time
D) Mass and volume
  • 6. Why are dark-colored objects good absorbers of heat?
A) They emit more radiation
B) They repel heat
C) They absorb more radiation and convert it into heat
D) They reflect radiation away
  • 7. Which material property affects the rate of heat conduction the most?
A) Specific heat capacity
B) Density
C) Vapor pressure
D) Thermal conductivity
  • 8. Which material property describes the amount of heat required to raise the temperature of a substance?
A) Viscosity
B) Thermal conductivity
C) Density
D) Specific heat capacity
  • 9. What effect does increasing surface area have on heat transfer through convection?
A) No effect on heat transfer
B) Increases heat transfer rate
C) Decreases heat transfer rate
D) Reverses heat flow direction
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