MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Dealkalization results in removal of all the ions from the wastewater. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Solids are removed from the wastewater by which of the following unit operation? |
| A. | Inter facial contact |
| B. | Solid stabilization |
| C. | Ion transfer |
| D. | Solids transfer |
| Answer» E. | |
| 3. |
Which form of solute stabilization occurs when effluent passes through limestone? |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» C. Re-carbonation | |
| 4. |
In which form of solute stabilization, hydrogen sulfide in the effluent is oxidized into sulfate? |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» B. Liming | |
| 5. |
By which process, odor producing substances are oxidized? |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» E. | |
| 6. |
Organic contaminants are removed from the wastewater by ____________ |
| A. | Water softening |
| B. | Demineralization |
| C. | Absorption |
| D. | Adsorption |
| Answer» E. | |
| 7. |
WHICH_FORM_OF_SOLUTE_STABILIZATION_OCCURS_WHEN_EFFLUENT_PASSES_THROUGH_LIMESTONE??$ |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» C. Re-carbonation | |
| 8. |
In which unit operation objectionable solutes are converted into unobjectionable forms without removal?$ |
| A. | Gas transfer |
| B. | Ion transfer |
| C. | Solute stabilization |
| D. | Solids Transfer |
| Answer» D. Solids Transfer | |
| 9. |
Solids are removed from the wastewater by which of the following unit operation?$ |
| A. | Inter facial contact |
| B. | Solid stabilization |
| C. | Ion transfer |
| D. | Solids transfer |
| Answer» E. | |
| 10. |
In which process, excess lime is converted into bicarbonate? |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» D. Super-chlorination | |
| 11. |
In which unit operation, gases are released or absorbed in the effluent? |
| A. | Gas transfer |
| B. | Ion transfer |
| C. | Solute stabilization |
| D. | Solids Transfer |
| Answer» B. Ion transfer | |
| 12. |
In which form of solute stabilization, hydrogen sulfide in effluent is oxidized into sulfate? |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» B. Liming | |
| 13. |
Which of the following process is used to remove the colloidal particles from the effluent? |
| A. | Chemical precipitation |
| B. | Chemical coagulation |
| C. | Ion exchange |
| D. | Adsorption |
| Answer» C. Ion exchange | |
| 14. |
By which process, odor producing substances is oxidized? |
| A. | Chlorination |
| B. | Liming |
| C. | Re-carbonation |
| D. | Super-chlorination |
| Answer» E. | |
| 15. |
Organic contaminants are removed from the wastewater by |
| A. | Water softening |
| B. | Demineralization |
| C. | Absorption |
| D. | Adsorption |
| Answer» E. | |
| 16. |
How many types of aerators are commonly used in the treatment of wastewater? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |