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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