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.Management Sciences
Category: Stoichiometry
An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is______________?
A. 0.2500
B. 0.2528
C. 0.5000
D. 0.5055
Heat of neutralisation of HCl and NaOH is – 57.46 kJ/Kg mole. The heat of ionisation of water will be _____________ kJ/Kg mole?
A. 57.46
B. -57.46
C. 114.92
D. -28.73
Which of the following has the smallest least effect on the solubility of a solute into the solvent ?
A. Nature of the solute
B. Nature of the solvent
C. Temperature
D. Pressure
The viscosity of water at room temperature may be around one ___________________?
A. Centipoise
B. Poise
C. Stoke
D. Both B. & C.
Refractory bricks having lower porosity have _____________________?
A. High insulating properties
B. Low heat capacity
C. Low thermal conductivity
D. Greater strength
The evaporation of aqueous solution of sugar causes its molarity to__________________?
A. Decrease
B. Increase
C. Remain unchanged
D. Either A. or B.; depends on the concentration of the solution
Panel test determines the ______________ of refractories?
A. Fusion point
B. Spalling resistance
C. Slag penetration resistance
D. Refractoriness under load (RUL)
According to Raoult’s law, “The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component.” Raoult’s law is not applicable under the following assumption/condition?
A. No component is concentrated at the surface of the solution
B. The component molecules are non polar and are of almost equal size
C. In the formation of solution, chemical combination/molecular association between unlike
molecules takes place
D. The attractive forces between like and unlike molecules are almost equal
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