Which of the following does not occur during firing/burning of refractories ?

Related Mcqs:

Lower part of hot metal mixer are lined with _____________ bricks?

A. Superduty fireclay B. High alumina C. Silica D. Carborundum...

Machine moulding of dry mixture of refractories requires a pressure of the order of _____________ kg/cm2?

A. 10 B. 100 C. 500 D. 1000...

Pick out the wrong statement ?

A. A ceramic material which becomes fluid upon heating and can be moulded in liquid/viscous state is termed s glass B. Ceramic materials do not undergo vitrification on heating C. Ceramic materials are brittle in nature D. Non-oxide ceramic materials generally act as a semi-conductor...

To resist spalling tendency, a refractory should have________________?

A. Greater diffusivity B. Low specific heat C. Low thermal co-efficient of expansion D. All A., B. and C....

Zirconia refractories are not used in_____________________?

A. Making sheaths for thermocouple B. Lining high temperature ceramic kilns C. Furnaces subjected to fluctuating temperature D. High frequency induction furnaces in the form of inductors...