A. 2.5
B. 42.5
C. 56
D. 2800
Correct Answer: 2.5 ✔
Last Updated: March 05, 2019
Related MCQs
- Molality is defined as the number of gm moles of solute per __________ of solvent?
- A solution with reasonably permanent pH is called a/an __________ solution?
- 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__________?