Question 1

A moldable refractory material that can be extruded and has a level of workability that permits it to be pounded into place to form a monolithic structure

Options :

A : Ramming mix

B : Plastic refractory

C : Monolithic refractory

D : None of the above

Answer: B

Question 2

Section of transfer line in which flow is in an upward direction is called

Options :

A : cyclone of FCCU

B : Plenum of FCCU

C : Riser of FCCU

D : None of the above

Answer: C

Question 3

Spalling of layers from the hot surface of a refractory lining is called

Options :

A : spalling

B : sheeting

C : crumbling

D : erosion

Answer: B

Question 4

Cristobalite is an important constituent of

Options :

A : Alumina bricks

B : Silica brick

C : Magnesia brick

D : Insulating brick

Answer: B

Question 5

Blanket, Module, Bulk paper, rope and vacuum formed shaped are:

Options :

A : shaped refractory

B : unshaped refractory

C : refractory fibre

D : all of the above.

Answer: C

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