A. Thermal spalling
B. Slag attack
C. Fusion under load
D. CO attack
Correct Answer: Thermal spalling ✔
Last Updated: March 05, 2019
Related MCQs
- Addition of zircon to silica refractory brick improves its__________?
- Pick out the wrong statement?
- Pick out the correct conversion?
- Pick out the wrong statement?
- Pick out the wrong statement?
- The number of H+ in 1 c.c solution of pH 13 is__________?
- If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight = 27) used in this reaction is __________ gm?
- In physical adsorption, as compared to chemisorption, the__________?
- 1 bar is almost equal to __________ atmosphere?
- Two solutions A1 and A2 have pH value of 2 and 6 respectively. It implies that the solution__________?
- Osmotic pressure of the solution can be increased by__________?
- Pick out the wrong statement about the recycle stream in a process ?
- Saturated molal absolute humidity of the vapor-gas mixture depends upon the__________?
- Measurement of the amount of dry gas collected over water from volume of moist gas is based on the__________?
- How many phases are present at eutectic point ?
- The atomic heat capacities of all solid elements __________ with decrease in temperature?
- The value of the gas-law constant ‘R’ is 1.987 ?
- Avogadro’s number is equal to__________?
- The density of a liquid is 1500 kg/m3. Its value in gin/litre will be equal to__________?
- A saturated vapor on being compressed would__________?
- A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal__________?
- With rise in temperature, the solubility of ammonia in water at a fixed pressure__________?
- One micron is equal to __________ cm?
- Kopp’s rule is useful for the determination of__________?
- The unit of specific heat at constant pressure, Cp, in SI unit is__________?
- For an ideal solution, the total vapor pressure varies __________ with the composition (expressed as mole fraction)?
- Dry air is a mixture of__________?
- The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are__________?
- An equation for calculating vapour pressure is given by, log10 P = A – B(t + c). This is called the__________?
- A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c?
- 1 BTU/lb.←°F is equivalent to __________ kcal/kg.°C?
- Which of the following is insensitive to changes in pressure ?
- °API gravity of water at N.T.P. is about__________?
- Pick out the wrong unit conversion of heat transfer rate?
- Othmer chart is useful in estimating the heat of__________?
- Concentration of a solution expressed in terms of __________ is independent of temperature?
- Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is__________?
- The reaction A + B → C has been conducted in a reactor as shown below. The number of boundaries around which material balance can be written, are__________?
- Applicability of Clausius-Clapeyron Equation is subject to the condition that the __________?
- A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor?
- Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale?
- Refractories used in/for __________ should have low thermal conductivity?
- Faster rate of drying of moulded refractories results in high __________ of refractories?
- Carborundum used for making crucibles for melting non-ferrous metals is chemically__________?
- Permeability of bricks is a measure of the__________?
- Fireclay bricks are not used in the__________?
- Which form of silica has the highest specific gravity ?
- Thermal conductivity of refractory bricks__________?
- Magnesite refractories are generally not used in the__________?
- Which is not an acidic refractory ?
- Which is a neutral refractory ?