IndiaBIX

Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 1
31.
Which one expands on heating ?
Silica bricks
Fireclay bricks
Both (a) & (b)
Neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Refractoriness/fusion points of 'superduty' refractories is __________ °C.
1520-1630
1630-1670
> 1730
> 2000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Outer combustion chamber of blast furnace stove is lined with __________ bricks.
fireclay
silica
chrome magnesite
zirconia
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Presence of MgO in alumino-silicate refractories __________ its refractoriness.
increases
lowers
does not affect
either (a) or (b); depends on its quantity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C.
770
570
270
70
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers