B . In steady state heat conduction, the only property of the substance which determines the temperature distribution, is the thermal conductivity.
C . In unsteady state heat conduction, heat flows in the direction of temperature rise.
D . In heat transfer by forced convection, Grashoff number is very important.
Answer: Option B Answer: (b).In steady state heat conduction, the only property of the substance which determines the temperature distribution, is the thermal conductivity.
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