Question

An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?

a.

Cork

b.

Saw dust

c.

Sand

d.

Chemically prepared foam

Posted under Basic Chemical Engineering

Answer: (c).Sand

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Q. An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks...
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