Phase Equilibrium of Analysis MCQ with Answers for IIT JAM 2023

Phase Equilibrium of Analysis MCQ with Answers for IIT JAM 2023

IIT JAM 2022 Chemistry MCQs with Answers of Phase Equilibrium


Phase Equilibrium of Analysis MCQ with Answers for IIT JAM 2023


1. The number of components in a system containing 1 mole of NH4Cl , 0.5 moles of NH3 and 0.5 moles of HCl is

(a) One
(b) Two
(c) Three
(d) Four

2. For the system; H2O (s) ⇌ H2O (g) under equilibrium, the number of degrees of freedom is

(a) zero
(b) 1
(c) 2
(d) 3

3. The maximum number of triple points occurring in the one-component sulphur system are

(a) 1
(b) 2
(c) 3
(d) 4

4. The number of degrees of freedom at the triple point for a phase diagram for one component system is

(a) 1
(b) 2
(c) 3
(d) zero

5. When a liquid is in equilibrium with its vapour the thermodynamic criteria for the equilibrium is

(a) Entropy of the liquid phase is greater than entropy in the vapour phase.
(b) Enthalpy of the liquid phase is less than the enthalpy in the vapour phase.
(c) Chemical potential in the liquid phase is equal to the chemical potential in the vapour phase
(d) Gibbs free energy of the two phases is different

6. The system NH4Cl (s)  → NH3 (g) + HCI(g) contains:

(a) two components
(b) one component
(c) three phases
(d) one phrase

7. The temperature at which a compound melts into a liquid of the same composition as the solid is called the:

(a) Congruent melting point
(b) Incongruent melting point
(c) Peritectic point
(d) Eutectic point

8. A system is said to be homogeneous if it consists only:

(a) One phase
(b) One state
(c) One component
(d) One molecule

9. A system consisting of calcium carbonate in equilibrium with calcium oxide and carbon dioxide has _____ phases:

(a) six
(b) two
(c) three
(d) four

10. The number of degrees of freedom of a mixture of three gases enclosed-in-a a cylinder is:

(a) 3
(b) 4
(c) 5
(d) 6

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