MCQOPTIONS
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MCQOPTIONS
This section includes 22 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. |
The fresh sewage is acidic in nature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The maximum quantity of dissolved oxygen present in wastewater is called __________ |
| A. | Saturated dissolved oxygen |
| B. | Maximum dissolved oxygen |
| C. | Optimal dissolved oxygen |
| D. | Peak dissolved oxygen |
| Answer» B. Maximum dissolved oxygen | |
| 3. |
The decomposition of sewage takes place, causing a pungent smell. Which of the following causes the pungent smell? |
| A. | CO2 |
| B. | H2SO4 |
| C. | HCL |
| D. | H2S |
| Answer» E. | |
| 4. |
Imhoff cone is used to measure the _______ |
| A. | Suspended solids |
| B. | Settleable solids |
| C. | Dissolved solids |
| D. | Total solids |
| Answer» C. Dissolved solids | |
| 5. |
The permissible dose of chloride in domestic sewage is __________ |
| A. | 120ppm |
| B. | 10ppm |
| C. | 1ppm |
| D. | 250ppm |
| Answer» B. 10ppm | |
| 6. |
________ is used to find the D.O content of sewage. |
| A. | Winkler method |
| B. | Chromatography |
| C. | Kjeldahl method |
| D. | Olfactometer |
| Answer» C. Kjeldahl method | |
| 7. |
The type of solids which floats in sewage is __________ |
| A. | Suspended solids |
| B. | Settleable solids |
| C. | Dissolved solids |
| D. | Total solids |
| Answer» B. Settleable solids | |
| 8. |
The presence of free ammonia in sewage represents ____________ |
| A. | Air pollution |
| B. | Old pollution |
| C. | Recent pollution |
| D. | Water pollution |
| Answer» D. Water pollution | |
| 9. |
THE_PERMISSIBLE_DOSE_OF_CHLORIDE_IN_DOMESTIC_SEWAGE_IS?$ |
| A. | 120ppm |
| B. | 10ppm |
| C. | 1ppm |
| D. | 250ppm |
| Answer» B. 10ppm | |
| 10. |
The decomposition of sewage takes place, causing a pungent smell. Which of the following causes the pungent smell?$ |
| A. | CO<sub>2</sub> |
| B. | H<sub>2</sub>SO<sub>4</sub> |
| C. | HCL |
| D. | H<sub>2</sub>S |
| Answer» E. | |
| 11. |
Imhoff cone is used to measure the _______$ |
| A. | Suspended solids |
| B. | Settleable solids |
| C. | Dissolved solids |
| D. | Total solids |
| Answer» C. Dissolved solids | |
| 12. |
Identify the odd one of the following. |
| A. | Fatty acids |
| B. | Chlorides |
| C. | Cellulose |
| D. | Fats |
| Answer» C. Cellulose | |
| 13. |
The maximum quantity of dissolved oxygen present in wastewater is called |
| A. | Saturated dissolved oxygen |
| B. | Maximum dissolved oxygen |
| C. | Optimal dissolved oxygen |
| D. | Peak dissolved oxygen |
| Answer» B. Maximum dissolved oxygen | |
| 14. |
Which of the following disease is caused due to lack of nitrates? |
| A. | Diphtheria |
| B. | Methemoglobinemia |
| C. | Tuberculosis |
| D. | Meningitis |
| Answer» C. Tuberculosis | |
| 15. |
________ is used to find the D.O content of sewage? |
| A. | Winkler method |
| B. | Chromatography |
| C. | Kjeldahl method |
| D. | Olfactometer |
| Answer» C. Kjeldahl method | |
| 16. |
The presence of which of the following indicates old pollution? |
| A. | Nitrates |
| B. | Nitrites |
| C. | H<sub>2</sub>S |
| D. | Sulfates |
| Answer» E. | |
| 17. |
The type of solids which floats in sewage is |
| A. | Suspended solids |
| B. | Settleable solids |
| C. | Dissolved solids |
| D. | Total solids |
| Answer» B. Settleable solids | |
| 18. |
Which chemical is used for the titration of waste water for finding its chloride content? |
| A. | Potassium chloride |
| B. | Sodium chloride |
| C. | Potassium chromate |
| D. | Potassium dichromate |
| Answer» D. Potassium dichromate | |
| 19. |
The presence of free ammonia in sewage represents |
| A. | Air pollution |
| B. | Old pollution |
| C. | Recent pollution |
| D. | Water pollution |
| Answer» D. Water pollution | |
| 20. |
The presence of which of the following in sewage indicates nitrogen content before decomposition of sewage? |
| A. | Nitrites |
| B. | Nitrates |
| C. | Free ammonia |
| D. | Albuminoid nitrogen |
| Answer» E. | |
| 21. |
What is the minimum quantity of dissolved oxygen that should be present in the treated sewage? |
| A. | 6ppm |
| B. | 4ppm |
| C. | 1ppm |
| D. | 10ppm |
| Answer» C. 1ppm | |
| 22. |
The temperature of sewage increases. What will be the effect on the dissolved oxygen in sewage? |
| A. | Remains constant |
| B. | Increase |
| C. | Decrease |
| D. | No effect |
| Answer» D. No effect | |