Fireclay bricks are used in the______________?

Related Mcqs:

1. Fireclay bricks is not used for lining the_______________?

   A. Cupola B. Gas producer C. Bottom of hot metal mixer D. Roof of open hearth furnace...

2. Fireclay bricks are not used in the_________________?

   A. Blast furnace B. Hot blast stove C. Cupola D. Wall of coke oven...

3. Fireclay bricks are not used in the________________?

   A. Beehive coke oven B. By-product coke oven walls C. Combustion chamber of B.F. stoves D. Coke oven regenerators...

4. With increase in the porosity, thermal spalling resistance of fireclay brick_______________?

   A. Increases B. Decreases C. Remain same D. May increase or decrease...

5. Fireclay refractories___________________?

   A. Are not resistant to the action of basic slags B. Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc C. Shrink during firing D. All A., B. and C....

6. In case of a ternary system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the______________?

   A. Solute concentration B. Temperature C. Both A. & B. D. Neither A. nor B....

7. Permeability of bricks is a measure of the___________________?

   A. Refractoriness B. Melting point C. Rate at which a fluid will pass through the pores D. Expansion during heating...

8. Refractory bricks with lower permeability is produced by using _________________?

   A. Higher firing temperature B. Higher moulding pressure C. Finer grog size D. All A., B. and C....

9. Roof of a basic electric furnace is made of ______________ bricks?

   A. Superduty fireclay B. Silica C. Chromite D. None of these...

10. Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of ______________ °C?

    A. 770 B. 570 C. 270 D. 70...