MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The overall order for the reaction 2A+ B > 2C with rate equation rate=k[A]^2[B] is? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 2. |
What is the speed of a chemical reaction? |
| A. | Is independent of the contact surface |
| B. | Is constant no matter what the temperature is |
| C. | Varies inversely with the absolute temperature |
| D. | Is extremely rapid between the ions in aqueous solution |
| Answer» E. | |
| 3. |
Which among the following catalyst increases the rate of the reaction? |
| A. | Calcium carbonate |
| B. | Calcium chloride |
| C. | Calcium hydroxide |
| D. | Calcium sulphate |
| Answer» B. Calcium chloride | |
| 4. |
Identify the unit of k in moles/L for the rate law: k[A][B]pow2. |
| A. | L/mol/s |
| B. | L(pow2)/mol/s |
| C. | L(pow2)* s(pow2)/mol(pow2) |
| D. | s |
| Answer» E. | |
| 5. |
From the choices given below, identify the activation energy of a reaction whose rate constant increases by 100 when the temperature changes from 300K to 360K. |
| A. | 53 |
| B. | 69 |
| C. | 35 |
| D. | 42 |
| Answer» C. 35 | |
| 6. |
Identify the true statement regarding catalyst. |
| A. | Always decreases the rate of the reaction |
| B. | Always increases the activation energy of the reaction |
| C. | Actually participates in the reaction |
| D. | Changes the equilibrium concentration of the product |
| Answer» D. Changes the equilibrium concentration of the product | |
| 7. |
The frequency of molecular collision increases if ____________ |
| A. | The concentration of product increases |
| B. | The concentration of product decreases |
| C. | The concentration of reactant increases |
| D. | The concentration of reactant decreases |
| Answer» D. The concentration of reactant decreases | |
| 8. |
Temperature and pressure are the only factors which affect the reaction rate. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The rate of the reaction is equal to the product of three factors listed below except ____________ |
| A. | Collision frequency |
| B. | Energy factor |
| C. | Orientation factor |
| D. | pH factor |
| Answer» E. | |