A. J/kg.°K
B. 0°K
C. W/m2.°C
D. W/m.°K
Related Mcqs:
- Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?
A. log (1/H+)
B. – log (1/H+)
C. 1/log H+
D. None of these - 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 capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?
A. 10.73 kJ
B. 16.15 kJ
C. 18.11 kJ
D. 18.33 kJ - Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?
A. 1/9
B. 8/9
C. 1/2
D. 5/9 - In a binary liquid system, the composition expressed as _______________ is independent of the temperature & pressure?
A. Kg of solute/kg of solvent
B. Kg-mole of solute/kg-mole of solvent
C. Kg-mole of solute/1000 kg of solvent
D. All A., B. & C. - The unit of specific heat at constant pressure, Cp, in SI unit is__________________?
A. W/m2°C
B. J/kg°K
C. W/m°K
D. J/m3°K - Concentration of a solution expressed in terms of _______________ is independent of temperature?
A. Molarity
B. Normality
C. Molality
D. None of these - For an ideal solution, the total vapor pressure varies _____________ with the composition (expressed as mole fraction)?
A. Inversely
B. Exponentially
C. Linearly
D. Negligibly - A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?
A. 350
B. 485
C. 140
D. 345 - Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?
A. Mixing
B. Adsorption
C. Wetting
D. Complete wetting
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