Cp is expressed in S.I. unit as_______________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. 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.

6. 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

7. Concentration of a solution expressed in terms of _______________ is independent of temperature?

   A. Molarity
   B. Normality
   C. Molality
   D. None of these

8. For an ideal solution, the total vapor pressure varies _____________ with the composition (expressed as mole fraction)?

   A. Inversely
   B. Exponentially
   C. Linearly
   D. Negligibly

9. 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

10. 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