Refractory Technology Mcqs for Chemical
Refractory Technology Mcqs for Chemical, this topic has 218 mcqs, It takes five to ten minutes to complete this free Refractory Technology Mcqs for Chemical test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "Refractory Technology Mcqs for Chemical" MCQs and share with your friends, brothers, sisters.
Refractory Technology Mcqs for Chemical (Total Quiz: 218)
MCQ: Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?
- 5
- 20
- 35
- 55
B
MCQ: In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?
- 20°
- 40°
- 60°
- 80°
C
MCQ: Si percentage in silica refractories used in the walls of coke oven is about______________________?
- 45
- 60
- 80
- 95
D
MCQ: Chrome magnesite bricks are_________________?
- Acidic in nature
- Neutral in nature
- Having higher RUL than silica bricks
- Made by mixing 30% Chromite and 70% Periclase
C
MCQ: Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?
- 10
- 15
- 20
- 30
D
MCQ: Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?
- Soaking pits
- Reheating furnace
- L.D. converter
- Rotary lime kiln
C
MCQ: Lower part of hot metal mixer are lined with _____________ bricks?
- Superduty fireclay
- High alumina
- Silica
- Carborundum
D
MCQ: Bauxite calcining rotary kilns are lined with ________________ bricks?
- Fireclay
- Carbon
- 85% alumina
- Corundum
C
MCQ: Spalling of a refractory means its____________________?
- Softening
- Fracture due to uneven expansion at high temperature
- Resistance to compressive loads
- Resistance to chemical action of gases and molten fluxes
B
MCQ: The linear thermal expansion of _______________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent?
- Fireclay
- Silica
- Magnesite
- Corundum
A