Chemical Engineering - Refractory Technology

1. 

An ideal refractory should have high

A. spalling rate
B. fusion point
C. shrinkage ability
D. none of these

Answer: Option B

Explanation:

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2. 

Ganister is a source of the

A. silica
B. periclase
C. lime
D. none of these

Answer: Option A

Explanation:

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3. 

Which brick undergoes maximum shrinkage on drying ?

A. Tar bonded dolomite bricks
B. Fireclay bricks
C. Magnesite bricks
D. Chromite bricks

Answer: Option B

Explanation:

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4. 

Which is the stable form of silica upto 1470°C ?

A. Quartz
B. Cristobalite
C. Tridymite
D. None of these

Answer: Option C

Explanation:

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5. 

Hot face insulating linings of high purity alumina fused mullite are used, where

A. very high temperatures are involved.
B. highly reducing conditions are involved.
C. presence of iron or silica is harmful.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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