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Maximum alumina content in high alumina refractory can be as high as ____________ percent?
Related MCQs
Water content in ground refractory material to be shaped into bricks by hand moulding is about __________ percent?
Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except__________?
Refractory bricks with lower permeability is produced by using __________?
Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to__________?
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 ?
Maximum alumina content in high alumina refractory can be as high as ____________ percent?
A. 30
B. 50
C. 70
D. 90
Correct Answer:
90
✔
Last Updated:
March 05, 2019