MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Identify the non-toxic and green solvent. |
| A. | Liquified carbondioxide |
| B. | Benzene |
| C. | Carbon tetrachloride |
| D. | Toluene |
| Answer» B. Benzene | |
| 2. |
Which of the following is a green solvent used for bleaching clothes? |
| A. | Hydrogen peroxide |
| B. | Tetrachloroethene |
| C. | Benzene |
| D. | Toluene |
| Answer» B. Tetrachloroethene | |
| 3. |
Replacement of liquid CO2 by halogenated solvent will result in less harm to groundwater. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Which of the following gas was traditionally used to bleach paper? |
| A. | Sulfur |
| B. | Carbon dioxide |
| C. | Chlorine |
| D. | Fluorine |
| Answer» D. Fluorine | |
| 5. |
Green chemistry is the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances. Identify the technique used in this area. |
| A. | Bioamplification |
| B. | Polymer manufacturing |
| C. | Pesticide synthesis |
| D. | Use of sunlight and Microwave-assisted reaction |
| Answer» E. | |
| 6. |
Which of the following is not a principle of Green Chemistry? |
| A. | Green solvents and auxiliaries |
| B. | Use of renewable feedstock |
| C. | Hazardous chemical synthesis |
| D. | Design for energy efficiency |
| Answer» D. Design for energy efficiency | |
| 7. |
Name the conventional solvent that was used for dry cleaning purposes which later confirmed to be a suspected carcinogen. |
| A. | Supercritical CO<sub>2</sub> |
| B. | Phenanthrene |
| C. | Tetrachloroethene |
| D. | Benzene aldehyde |
| Answer» D. Benzene aldehyde | |
| 8. |
Which of the following is a greener route to produce ethanal commercially? |
| A. | Catalytic cracking of ethanol |
| B. | Oxidation of ethene with an ionic catalyst |
| C. | Steam reforming of methanol |
| D. | Dehydrogenation of ethylene |
| Answer» C. Steam reforming of methanol | |