The maximum linear expansion of silica bricks during firing is about ______________ percent?

Related Mcqs:

1. Semi-silica bricks compared to silica bricks have_______________?

   A. Less fusion point B. Better spalling resistance C. Both A. and B. D. Neither A. not B....

2. The linear thermal expansion of _______________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent?

   A. Fireclay B. Silica C. Magnesite D. Corundum...

3. Porosity of silica bricks varies from ______________ percent?

   A. 5 to 10 B. 20 to 30 C. 45 to 60 D. 60 to 75...

4. Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?

   A. 10 B. 15 C. 20 D. 30...

5. An indication of degree of firing in silica brick is its____________________?

   A. Specific gravity B. Fusion point C. RUL D. None of these...

6. Firing temperature of magnesite bricks is about _____________ °C?

   A. 800-1000 B. 1000-1200 C. 1600-1800 D. 2400-2600...

7. Firing temperature is minimum (1250-1400 °C) for _______________ bricks?

   A. Fireclay B. Direct bonded basic C. Silica D. Magnesite...

8. Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?

   A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...

9. Use of higher percentage of lime for bonding silica bricks, reduces their__________________?

   A. Strength B. Abrasion resistance C. Both A. & B. D. Neither A. nor B....

10. Silica bricks are never used for lining the____________________?

    A. Beehive coke ovens B. By-product coke ovens C. Dome of blast furnace stoves D. Roof of open hearth furnace...