Gibb’s Phase Rule Solved MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 22, 2025

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1. : Which of the following is the wrong statement with respect to a phase diagram?



2. : Which of the following is the non-homogeneous system?



3. : Under which of the following conditions will we get a stable phase diagram?



4. : Which of the following is the odd statement with respect to a phase reaction?



5. : The Gibb’s phase rule states __________



6. : For the water system, what is the number of phases at the triple point?



7. : Which of the following causes reduction in the general phase diagram of Ferric chloride – water system, in water content in ferric chloride at every step?



8. : In concentration of phenol there happens a regular sharpening for the T-C relation in phenol. If the equilibrium conditions are varied at a particular point __________ will happen.



9. : In phase diagram ______________ is the driving force of the diffusion process.



10. : Which of the following is the efficiency of phase rule over Lever rule?



11. : The Liquid phase exists for all compositions above which of the following region?



12. : What is the eutectic concentration if we are given the following data? Pressure = 1 atm, Temperature = 1°C



13. : In between the both components in the mixture of liquid and vapor compositions, identify the type of component present (at equilibrium point).



14. : Which of the following is correct if we calculate the concentration with given values? T = 20 degrees, P = 2 atm



15. : Which of the following happens during a non-steady state diffusion?



16. : To the parent material would be described by ______________ the mechanism of diffusion of small atomic radius compared?



17. : The formula for condensed phase rule is ___________



18. : The point at which all the three phases of a system exist is ________



19. : At the meeting point of these two components identify the component in the mixture of propanol and iso propanol is____________.



20. : Which of the following are the limits of phase rule?



 

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