Chemical Engineering - Refractory Technology
Exercise :: Refractory Technology - Section 2
11. |
Cold crushing strength of refractories depends upon its |
A. |
composition | B. |
texture | C. |
firing temperature | D. |
all (a), (b) and (c) |
Answer: Option D
Explanation:
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12. |
Tar bonded dolomite bricks |
A. |
are stored under controlled temperature & humidity to avoid hydration. | B. |
are used in outer lining of L.D. converters. | C. |
have poorer hydration resistance than pitch bonded bricks. | D. |
all (a), (b) and (c) |
Answer: Option D
Explanation:
|
13. |
Electrical resistor bars are made of |
A. |
silicon carbide | B. |
alumina | C. |
zirconia | D. |
graphite |
Answer: Option A
Explanation:
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14. |
Which is not an alumino-silicate refractory? |
A. |
Fireclay bricks. | B. |
Mullite bricks. | C. |
Tar dolomite bricks. | D. |
High alumina bricks. |
Answer: Option C
Explanation:
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15. |
Periclase refractory contains mainly |
Answer: Option B
Explanation:
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