Refractory Technology — Test 7
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Question 1
With decrease in porosity, the ______________ of the refractories decreases?
Question 2
______________ bricks should not be used in oxidising atmosphere?
Question 3
Magnesite bricks have poor resistance to attack by _____________ slag?
Question 4
Which is not a natural insulating material ?
Question 5
Which of the following is not a high alumina refractory material ?
Question 6
___________________ is the measure of the strength of refractory under the combined effect of temperature & load ?
Question 7
Which one contains minimum percentage of SiO2 ?
Question 8
Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as _____________ percent?
Question 9
Mullite is chemically represented by_________________?
Question 10
High alumina refractory compared to fireclay bricks have____________________?