MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is a factor that automobile engines use to increase the rate of its internal reactions? |
| A. | Concentration of fuel |
| B. | Viscosity of the fuel |
| C. | Surface area of the reactants |
| D. | Nature of the fuel |
| Answer» D. Nature of the fuel | |
| 2. |
When the two reactants are in the same phase, then which common phase will ensure that the products are formed at the fastest pace? |
| A. | Solid |
| B. | Liquid |
| C. | Gas |
| D. | The rate of a reaction is independent of the phase of the reactants |
| Answer» D. The rate of a reaction is independent of the phase of the reactants | |
| 3. |
What is the change in the rate of a second order reaction when the concentration of the reactant is increased by 2 times its initial value? |
| A. | It doubles |
| B. | No change |
| C. | It quadruples |
| D. | It triples |
| Answer» D. It triples | |
| 4. |
What happens to the value of G of a reaction when a catalyst is added to it? |
| A. | It increases |
| B. | It decreases |
| C. | It remains unchanged |
| D. | It is undefined on adding a catalyst |
| Answer» D. It is undefined on adding a catalyst | |
| 5. |
Which of the following laws state that the rate of a chemical reaction is directly proportional to the concentration of reactants? |
| A. | Henry s law |
| B. | Law of conservation of mass |
| C. | Law of mass action |
| D. | Dalton s law |
| Answer» D. Dalton s law | |
| 6. |
What happens to the rate of the reaction on increasing its temperature? |
| A. | Rate of reaction increases |
| B. | Rate of reaction decreases |
| C. | Rate of reaction fluctuates between its maxima and minima |
| D. | Rate of reaction is independent of temperature |
| Answer» B. Rate of reaction decreases | |
| 7. |
A catalyst only increases the rate of the reaction in the forward direction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following will lead to an increase in the rate of the reaction? |
| A. | Decrease in temperature |
| B. | Decreasing concentration of reactants |
| C. | Addition of catalyst |
| D. | Addition of inhibitor |
| Answer» D. Addition of inhibitor | |
| 9. |
Which of the following is not a direct factor affecting the rate of a reaction? |
| A. | Temperature |
| B. | Presence of catalyst |
| C. | Order of reaction |
| D. | Molecularity |
| Answer» E. | |
| 10. |
Rate of a reaction depends on the H of the reaction. |
| A. | True |
| B. | False |
| Answer» C. | |