MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Reaction Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Order of the reaction (-rA) = kCAa.CBb is ____ |
| A. | a |
| B. | b |
| C. | a-b |
| D. | a+b |
| Answer» E. | |
| 2. |
The molecularity of the reaction A+2B R, (-rA) = k CACB2 is ____ |
| A. | 2 |
| B. | 1 |
| C. | 3 |
| D. | 0 |
| Answer» D. 0 | |
| 3. |
For the reaction 3A+2B R, which of the following expressions is valid? |
| A. | ( frac{-r_A}{3} )= ( frac{-r_B}{2} )= ( frac{r_C}{1} ) |
| B. | ( frac{-r_A}{3} )= ( frac{-r_B}{2} )= ( frac{r_C}{1} ) |
| C. | ( frac{-r_A}{1} )= ( frac{-r_B}{1} )= ( frac{r_R}{1} ) |
| D. | ( frac{-r_A}{3} )= ( frac{-r_B}{4} )= ( frac{r_C}{1} ) |
| Answer» D. ( frac{-r_A}{3} )= ( frac{-r_B}{4} )= ( frac{r_C}{1} ) | |
| 4. |
The rate of reaction is rapid for which of the following reactions? |
| A. | Cellular reactions |
| B. | Reactions in coal furnaces |
| C. | Reactions in rocket engines |
| D. | Gas reactions in porous catalysts |
| Answer» D. Gas reactions in porous catalysts | |
| 5. |
The study of rates at which chemical reactions occur and the effect of various parameters on the rate are termed as ____ |
| A. | Chemical Technology |
| B. | Chemical Sciences |
| C. | Chemical Kinetics |
| D. | Fluid Mechanics |
| Answer» D. Fluid Mechanics | |
| 6. |
An example of pseudo first order reaction is ____ |
| A. | Hydrolysis of an ester to a carboxylic acid using water |
| B. | NO<sub>2</sub> + CO NO + CO<sub>2</sub> |
| C. | N<sub>2</sub>O<sub>5</sub> NO<sub>2</sub> + 1/2 O<sub>2</sub> |
| D. | 2NO + H<sub>2</sub> N<sub>2</sub>O + H<sub>2</sub>O |
| Answer» B. NO<sub>2</sub> + CO NO + CO<sub>2</sub> | |
| 7. |
Which among the following reactions is elementary? |
| A. | A + B R; (-r<sub>A</sub>) = k C<sub>A</sub>C<sub>B</sub> |
| B. | 2A + B R; (-r<sub>A</sub>) = k C<sub>A</sub><sup>2</sup> |
| C. | 2A + B R; (-r<sub>A</sub>) = k C<sub>A</sub>C<sub>B</sub><sup>2</sup> |
| D. | A + B R; (-r<sub>A</sub>) = k C<sub>B</sub> |
| Answer» B. 2A + B R; (-r<sub>A</sub>) = k C<sub>A</sub><sup>2</sup> | |
| 8. |
The unit of rate constant, k for a first order reaction is ____ |
| A. | (time)<sup>-1</sup> |
| B. | mol. time |
| C. | ( frac{mol}{m^3} ) |
| D. | ( frac{mol}{m^3 s} ) |
| Answer» B. mol. time | |
| 9. |
For a homogeneous reaction of order n, the unit of rate constant, k is ____ |
| A. | conc<sup>n-1</sup> |
| B. | ( frac{conc^{-1}}{time} ) |
| C. | ( frac{conc^{-1}}{time^{1-n}} ) |
| D. | ( frac{conc^{1-n}}{time^{-1}} ) |
| Answer» E. | |