MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If E = 104 and MH = 10, the nature of reaction is ____ |
| A. | First order |
| B. | Second order |
| C. | Pseudo first order |
| D. | Negative order |
| Answer» D. Negative order | |
| 2. |
The gas film resistance obtained in percentage if the gas film resistance is 10 hr.m3.Pa/ mol and the total resistance is 20.01 hr.m3.Pa/ mol is ____ |
| A. | 49.9% |
| B. | 39.9% |
| C. | 29.9% |
| D. | 19.9% |
| Answer» B. 39.9% | |
| 3. |
State true or false.For instantaneous reaction, E < \(\frac{M_H}{5}.\) |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The relationship between enhancement factor and Hatta modulus for pseudo first order reaction is ____ |
| A. | E = MH |
| B. | E < 5MH |
| C. | 5E > MH |
| D. | E > 5MH |
| Answer» E. | |
| 5. |
The Enhancement factor in liquid film is the ratio of ____ |
| A. | Rate of take up of gas by straight mass transfer to the ate of take up of gas by reaction |
| B. | Rate of take up of gas by reaction to the rate of take up of gas by straight mass transfer |
| C. | Rate of reaction at the interface to the rate of take up of gas by straight mass transfer |
| D. | Rate of take up of gas by straight mass transfer to rate of reaction at the interface |
| Answer» C. Rate of reaction at the interface to the rate of take up of gas by straight mass transfer | |
| 6. |
What is the rate expression for physical absorption of a gas A to a liquid based on two film theory? (Where, kAg is the gas film mass transfer coefficient and kAl is the liquid film mass transfer coefficient) |
| A. | -rA = \(\frac{p_A- H_A C_A}{\frac{1}{a} + \frac{1}{k_{Al}a}} \) |
| B. | -rA = \(\frac{p_A- C_A}{\frac{1}{k_{Ag} a} + \frac{1}{k_{Al} a}} \) |
| C. | -rA = \(\frac{p_A- H_A C_A}{\frac{1}{k_{Al}a}+ \frac{1}{k_{Al}a}} \) |
| D. | -rA = \(\frac{H_A C_A}{\frac{1}{k_{Al} a}+ \frac{1}{k_{Al}a}} \) |
| Answer» D. -rA = \(\frac{H_A C_A}{\frac{1}{k_{Al} a}+ \frac{1}{k_{Al}a}} \) | |
| 7. |
Which of the following is the correct expression of Henry’s law? |
| A. | CA = \(\frac{p_A}{H_A} \) |
| B. | HA = \(\frac{C_A}{p_A} \) |
| C. | pA = \(\frac{C_A}{H_A} \) |
| D. | CA = \(\frac{H_A}{p_A} \) |
| Answer» B. HA = \(\frac{C_A}{p_A} \) | |
| 8. |
Which of the following is not a fluid – fluid reaction? |
| A. | Reaction of chlorine with benzene to produce chlorobenzene |
| B. | Soap formation by action of aqueous alkali on fatty acids |
| C. | Action of ammonia on aqueous nitric acid |
| D. | Combustion of coal |
| Answer» E. | |
| 9. |
State true or false.In physical absorption of a gas in a liquid, the resistance to transfer of gas to liquid is only in the liquid phase. |
| A. | True |
| B. | False |
| Answer» C. | |