Q. Grog

View solution

Q. Test piece for determination of RUL of a refractory is heated in a/an

View solution

Q. Magnesite refractories are used for the construction of those furnaces, which are

View solution

Q. Roof of a basic electric furnace is made of __________ bricks.

View solution

Q. High density refractory bricks have lower

View solution

Q. Silliminite (Al₂O₃.SiO₂) refractory, which is a neutral refractory, is not used in

View solution

Q. Zircon refractories have

View solution

Q. Cermets are

View solution

Q. Carbon refractory blocks

View solution

Q. Which is the most stable crystalline form of silica at room temperature ?

View solution

Q. Silica refractories

View solution

Q. PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C.

View solution

Q. Which of the following is not an acidic refractory ?

View solution

Q. Insulating refractories should have

View solution

Q. Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² .

View solution

Q. Zirconia refractory

View solution

Q. Which one contains maximum percentage of Al₂O₃ ?

View solution

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

View solution

Q. Silicon carbide refractories are used in the

View solution

Q. Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent.

View solution