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:
|
| 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:
|
| 15. |
Periclase refractory contains mainly |
Answer: Option B
Explanation:
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