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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 | |