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This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
1. |
What is the efficiency of phase rule over Lever rule? |
A. | 25% |
B. | 50% |
C. | 75% |
D. | 85% |
Answer» E. | |
2. |
Calculate the concentration from the given data.T = 20 degreesP = 2 atm |
A. | 5 |
B. | 2 |
C. | 10 |
D. | 0 |
Answer» D. 0 | |
3. |
In the mixture of liquid and vapor compositions, identify the type of component present in between the two components (at equilibrium point). |
A. | Regular solution |
B. | Equilibrium solution |
C. | Transition solution |
D. | Steady state solution |
Answer» E. | |
4. |
What are the limits of phase rule? |
A. | Cannot determine the presence of more the one phase in a system |
B. | Cannot determine solubility |
C. | Cannot determine composition |
D. | Can determine temperature |
Answer» B. Cannot determine solubility | |
5. |
In the mixture of propanol and iso propanol, identify the component at the meeting point of these two components. |
A. | Propanol |
B. | Propane |
C. | Propane-2-ol |
D. | Water |
Answer» D. Water | |
6. |
The driving force of the diffusion process in phase diagram is __________________ |
A. | The slope in Gibbs free energy |
B. | The slope in solubility |
C. | The slope in temperature |
D. | The slope in pressure |
Answer» B. The slope in solubility | |
7. |
What happens during a non-steady state diffusion? |
A. | The composition behavior does not change with time |
B. | The composition behavior changes with time |
C. | The diffusion can be described by Mond’s Second Law |
D. | Zero composition |
Answer» E. | |
8. |
The mechanism of diffusion of small atomic radius compared to the parent material would be described by __________________ |
A. | Substitutional diffusion |
B. | Interstitial diffusion |
C. | Vacancy diffusion |
D. | Drift |
Answer» C. Vacancy diffusion | |
9. |
In the general phase diagram of Ferric chloride – water system, what causes reduction in water content in ferric chloride at each step? |
A. | Reduction in moisture content |
B. | Reduction in concentration |
C. | Reduction in equilibrium shift |
D. | Increase in temperature |
Answer» B. Reduction in concentration | |
10. |
For the T-C relation in phenol, there happens a regular sharpening in concentration of phenol. What will happen if the equilibrium conditions are varied at a particular point? |
A. | The curve remains unchanged |
B. | The curve decreases |
C. | The curve increases |
D. | The curve inverts |
Answer» D. The curve inverts | |