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A solution with reasonably permanent pH is called a/an _______________ solution?
Related MCQs
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the__________?
A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is__________?
For a neutral solution (pH = 7), the value of [H+] [OH-] is equal to__________?
With rise in temperature, the heat capacity of a substance__________?
One of the specific gravity scales is “Brix” (used specifically for sugar solution). It is defined as __________?
A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be__________?
The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be __________ kJ/kgmole?
A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of __________?
Heat of __________ of a fuel is called its calorific value?
The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the__________?
The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is__________?
Viscosity of 1 centipoise is equal to 1 Centistoke in case of__________?
Pick out the wrong unit conversion of temperature?
A vapor that exists above its critical temperature is termed as a __________ vapor?
The amount of Zn (atomic weight = 65) required to form 224 c.c. of H2 at N.T.P. on treatment with dilute H2SO4will be __________ gm?
The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 × __________?
‘Cox’ chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the__________?
Dissolving a solute in a solvent does not change its__________?
In the reaction, Ca + 2H2O = Ca(OH)2 + H2; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (Atomic weight of calcium = 40) ?
Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C?
Which property of refractories is the most important for top section of the blast furnace ?
Roof of a basic electric furnace is made of __________ bricks?
Outer combustion chamber of blast furnace stove is lined with __________ bricks?
Magnesite refractories are used for the construction of those furnaces, which are__________?
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?
Test piece for determination of RUL of a refractory is heated in a/an__________?
With increase in the alumina content, the refractoriness of high alumina refractories__________?
Thermal diffusivity of a refractory brick is high, when its __________ is high?
Fusion point of a basic refractory material is__________?
Fireclay bricks are used in the__________?
High porosity refractory bricks have__________?
Fireclay bricks are not used in the__________?
Hot metal runner in blast furnace are lined with __________ bricks?
Presence of MgO in alumino-silicate refractories __________ its refractoriness ?
Chemically, mullite refractories is__________?
Panel test determines the __________ of refractories?
Maximum alumina content in high alumina refractory can be as high as __________ percent?
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__________?
A solution with reasonably permanent pH is called a/an _______________ solution?
A. Ideal
B. Non-ideal
C. Buffer
D. Colloidal
Correct Answer:
Buffer
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Last Updated:
March 05, 2019