40 TOP REFRACTORY TECHNOLOGY Online Test – Multiple Choice Questions and Answers

1. With increasing alumina content, the fusion point of high alumina refractories

 
 
 
 

2. Spalling resistance of a refractory can not be increased by

 
 
 
 

3. Refractoriness under load (RUL) is the most important property for the refractory bricks

 
 
 
 

4. Fireclay refractories have

 
 
 
 

5. Electrical resistor bars are made of

 
 
 
 

6. Which is a basic refractory ?

 
 
 
 

7. Which is not an alumino-silicate refractory?

 
 
 
 

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

 
 
 
 

9. Which of the following is not a neutral refractory ?

 
 
 
 

10. Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity)

 
 
 
 

Question 1 of 10

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