The minimum number of phases that can exist in a system is________________?

Related Mcqs:

1. For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the _______________ of each component must be same in all phases?

   A. Chemical potential
   B. Fugacity
   C. Both A. and B
   D. Neither A. nor B

2. For a thermodynamic system containing ‘x’ chemical species, the maximum number of phases that can co-exist at equilibrium is_________________?

   A. x
   B. x + 1
   C. x + 2
   D. x + 3

3. At ____________ point, all the three phases (i.e. solid, liquid and gas) co-exist ?

   A. Eutectic
   B. Triple
   C. Plait
   D. Critical

4. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the ____________ point?

   A. Freezing
   B. Triple
   C. Boiling
   D. Boyle

5. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is__________________?

   A. 1
   B. 2
   C. 3
   D. 4

6. The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are ?

   A. 1
   B. 2
   C. 3
   D. 0

7. At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?

   A. μ° + RT ln f
   B. μ°+ R ln f
   C. μ° + T ln f
   D. μ° + R/T ln f

8. The necessary and sufficient condition for equilibrium between two phases is_________________?

   A. The concentration of each component should be same in the two phases
   B. The temperature of each phase should be same
   C. The pressure should be same in the two phases
   D. The chemical potential of each component should be same in the two phases

9. Number of phases in a colloidal system is_____________________?

   A. 1
   B. 2
   C. 3
   D. 4

10. The temperature at which both liquid and gas phases are identical, is called the _____________ point?

    A. Critical
    B. Triple
    C. Freezing
    D. Boiling