Sail E0 Webinar

MCQs

Total Questions : 868 | Page 13 of 87 pages
Question 121. With increase in the porosity, thermal spalling resistance of fireclay brick
  1.    Increases
  2.    Decreases
  3.    Remains same
  4.    May increase or decrease
 Discuss Question
Answer: Option A. -> Increases
Question 122. Ganister is a source of the
  1.    Silica
  2.    Periclase
  3.    Lime
  4.    None of these
 Discuss Question
Answer: Option A. -> Silica
Question 123. Use of higher percentage of lime for bonding silica bricks, reduces their
  1.    Strength
  2.    Abrasion resistance
  3.    Both A & B
  4.    Neither A nor B
 Discuss Question
Answer: Option C. -> Both A & B
Question 124. Chrome magnesite bricks are used in the
  1.    Side walls of soaking pits and arc furnaces
  2.    Copper melting furnaces & converters
  3.    Burner block of glass tanks
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 125. Faster rate of drying of moulded refractories results in high __________ of refractories.
  1.    Green strength
  2.    Voids
  3.    Shrinkage
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 126. Grog
  1.    Contains both alumina and silica
  2.    Iscrushed firebrick
  3.    Is a non-plastic material
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 127. Refractories used in/for __________ should have low thermal conductivity.
  1.    Coke ovens
  2.    Insulation
  3.    Regenerators
  4.    Muffle furnaces
 Discuss Question
Answer: Option B. -> Insulation
Question 128. Panel test determines the __________ of refractories.
  1.    Fusion point
  2.    Spalling resistance
  3.    Slag penetration resistance
  4.    Refractoriness under load (RUL)
 Discuss Question
Answer: Option B. -> Spalling resistance
Question 129. Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm².
  1.    10
  2.    100
  3.    500
  4.    1000
 Discuss Question
Answer: Option D. -> 1000
Question 130. Si percentage in silica refractories used in the walls of coke oven is about
  1.    45
  2.    60
  3.    80
  4.    95
 Discuss Question
Answer: Option D. -> 95

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0