Thermal conductivity of refractory bricks____________________? – McqOptions

MCQOPTIONS

1.	Thermal conductivity of refractory bricks____________________?
A.	Increases with decrease in porosity
B.	Decreases with decreases in porosity
C.	Is independent of its porosity and is maximum for insulating bricks
D.	Increases with the amount of air entrapped in pores
Answer» B. Decreases with decreases in porosity

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