Question No : 1
A metallic anchor, usually V-stud which has a foot-shaped configuration at the base to aid weld attachment to the shell is called.

• A.V-anchor
• B.Footed anchor
• C.Stud weld
• D.None of the above

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Question No : 2
All the samples for the CCs test must be dried at 220 to 230?C (105 to 110?C) for

• A.12 hrs (overnight)
• B.18 hrs (overnight)
• C.20 hrs (overnight)
• D.24 hrs (overnight)

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Question No : 3
Applicator qualification for thin layer erosion resistant lining, each applicator shall pack a test panel of size.

• A.12” x 12” x ¾ or 1” (300 x 300 x 20 or 25mm)
• B.500 x 500 x 25mm
• C.450 x 450 x 50 mm
• D.None of the above

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Question No : 4
API 936 documentation should content

• A.Execution details
• B.Design details
• C.Quality standards
• D.All above

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Question No : 5
Fiber concentrations typically range is

• A.1 C 4 wt percent
• B.1 C 3 wt percent
• C.1 C 2 wt percent
• D.Any of the above

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Question No : 6
The destructive chemical reaction between refractories and external agencies at high temperatures, resulting in the formation of a liquid is called

• A.Slagging of refractories
• B.Slumping of refractories
• C.Dusting of refractories
• D.None of the above

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Question No : 7
Based on screen analysis the fines (cement, fumed silica, fine alumina) in typical modern castable is

• A.40 C 50%
• B.30 C 40%
• C.20 C 30%
• D.None of the above

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Question No : 8
Refractories containing a substantial amount of silica which is reactive with basic refractories, basic slags, or basic fluxes at high temperatures are known as

• A.Acid refractories
• B.Basic refractories
• C.Natural refecatories
• D.None of the above

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Question No : 9
The exposure of a material or body to a rapid change in temperature which may have a deleterious effect

• A.Thermal expansion
• B.Thermal conductivity
• C.Thermal shock
• D.None of the above

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Question No : 10
A natural or synthetic mineral theoretically consisting solely of alumina (Al2O3), specific gravity 4.00 C 4.02, melting point 3720?
F. (2050? C) Hardness 8.8 is called

• A.Corundum
• B.Kaolin
• C.Mica
• D.None of the above

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