MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Applied 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 CO2 |
| 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 | |
| 9. |
The green synthesis methods should have _______ |
| A. | Low efficiency |
| B. | High harmful by products |
| C. | Low energy requirements |
| D. | Low atom efficiency |
| Answer» D. Low atom efficiency | |
| 10. |
The di-basic acid is used in its ________ |
| A. | Impure form |
| B. | Pure form |
| C. | Solid state |
| D. | Liquid form |
| Answer» C. Solid state | |
| 11. |
It reduces the ______ and protects the environment. |
| A. | Pollution |
| B. | Temperature |
| C. | Air |
| D. | Water |
| Answer» B. Temperature | |
| 12. |
In green synthetic methods, the high quality product with no ________ are produced. |
| A. | Good products |
| B. | Catalyst |
| C. | Reaction |
| D. | Contamination |
| Answer» E. | |
| 13. |
C2H4 +1/2 O2 -> C2H4O(Ethylene oxide). This reaction will takes place under presence of catalyst. Find out the %atom economy. |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 1 |
| Answer» E. | |
| 14. |
Self thermo regulated systems are called as __________ |
| A. | Green methodologies |
| B. | Green synthesis |
| C. | Green principles |
| D. | Green concepts |
| Answer» B. Green synthesis | |
| 15. |
The green synthesis methods should have _________ |
| A. | Low efficiency |
| B. | High harmful products |
| C. | Low energy requirements |
| D. | Low atom efficiency |
| Answer» D. Low atom efficiency | |
| 16. |
_________ are greener than the conventional methods. |
| A. | Micro waves |
| B. | Electromagnetic waves |
| C. | Ultra violet waves |
| D. | Radio waves |
| Answer» B. Electromagnetic waves | |
| 17. |
_________ is the fundamental advantage of the sono chemistry in organic synthesis without solvents. |
| A. | High yields |
| B. | High energy requirements |
| C. | Use of solvents |
| D. | High wastes |
| Answer» B. High energy requirements | |
| 18. |
According to the green chemistry, the chemical involved in the production must be ________ |
| A. | Non toxic |
| B. | Toxic |
| C. | Highly toxic |
| D. | Produces the toxic by products |
| Answer» B. Toxic | |