Question 1

For non-erosive service, what is the required number of test specimens per sample for cold crushing strength?

Options :

A : 1

B : 2

C : 3

D : 4

Answer: B

Question 2

Which of the following is a correct condition for gunned material test panels used for CCS and PLC testing?

Options :

A : Test panels must be 24 in. Ã— 24 in. Ã— 6 in. thick and shot vertically.

B : The minimum gunned thickness shall be 2 in., with a tolerance of ±0.25 in.

C : A vibrating screed must be used during panel finishing.

D : Test panels must be dried at 400°F (204°C) for 6 hours before specimen extraction.

Answer: B

Question 3

For air-setting phosphate bonded, erosion – resistant refractories mixing , the mixer’s paddles and bowls shall be

Options :

A : Aluminium

B : Steel

C : Carbon

D : None of the above

Answer: B

Question 4

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 5

Gunning test panels are constructed with removable backs as required for

Options :

A : laboratory test

B : visual inspection of the castable

C : physical property test

D : None of the above

Answer: B

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