MCQOPTIONS
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MCQOPTIONS
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. |
Stark-Einstein studied the __________ aspects of photochemical reactions by application of quantum theory of light. |
| A. | qualitative |
| B. | quantitative |
| C. | geometrical |
| D. | qualitative and quantitative |
| Answer» C. geometrical | |
| 2. |
Grothus Draper law is __________ in nature. |
| A. | purely qualitative |
| B. | quantitative |
| C. | qualitative and quantitative |
| D. | non-acceptable |
| Answer» B. quantitative | |
| 3. |
When light falls on a cell containing a reaction mixture __________ component of light is responsible for producing chemical reaction. |
| A. | absorbed |
| B. | adsorbed |
| C. | transmitted |
| D. | reflected |
| Answer» B. adsorbed | |
| 4. |
Beer-Lambert law is applicable if ____________ |
| A. | temperature changes |
| B. | dilute solution is used |
| C. | non-monochromatic radiation is used |
| D. | temperature varies linearly |
| Answer» C. non-monochromatic radiation is used | |
| 5. |
When a molecule absorbs a photon, it is necessary that only one molecule should react. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
__________ is also known as Principle of Quantum Activation. |
| A. | Lambert s law |
| B. | Beer s law |
| C. | Stark-Einstein law |
| D. | Stark law |
| Answer» D. Stark law | |
| 7. |
The intensity of a beam of monochromatic light ___________ with the increase in the concentration of the absorbing substance arithmetically. |
| A. | decrease exponentially |
| B. | increase exponentially |
| C. | decrease linearly |
| D. | increase linearly |
| Answer» B. increase exponentially | |
| 8. |
When a beam of light is allowed to pass through a transparent medium, the rate of decrease of intensity with the thickness of medium is __________ to the intensity of the light. |
| A. | inversely proportional |
| B. | directly proportional |
| C. | equal |
| D. | not related |
| Answer» C. equal | |
| 9. |
The absorbed radiation does not necessarily cause a chemical reaction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
__________ is also known as the Principle of Photochemical Activation. |
| A. | Grothus Draper law |
| B. | Lambert s law |
| C. | Draper law |
| D. | Stark law |
| Answer» B. Lambert s law | |