 
			 
			MCQOPTIONS
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				This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Waste Water Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. | The treatment options for an elevated total dissolved solid depends on _______ | 
| A. | Quantity of water | 
| B. | Nature of ions | 
| C. | Nature of suspended solids | 
| D. | Type of microbes | 
| Answer» C. Nature of suspended solids | |
| 2. | What is the secondary standard for TDS? | 
| A. | 400 mg/l | 
| B. | 500 mg/l | 
| C. | 600 mg/l | 
| D. | 700 mg/l | 
| Answer» C. 600 mg/l | |
| 3. | The primary dissolved solids are assumed to be _________ | 
| A. | KI | 
| B. | KCl | 
| C. | MnCl | 
| D. | AlCl | 
| Answer» C. MnCl | |
| 4. | On which of the factors does the relationship between TDS and conductivity does not depend on? | 
| A. | Type of ions | 
| B. | Nature of ions | 
| C. | Nature of suspended solids | 
| D. | Type of microbes | 
| Answer» E. | |
| 5. | What is the standard for TDS for aesthetic considerations? | 
| A. | 250 mg/l | 
| B. | 500 mg/l | 
| C. | 750 mg/l | 
| D. | 1000 mg/l | 
| Answer» C. 750 mg/l | |
| 6. | What is the temperature required to remove occluded water? | 
| A. | 170˚C | 
| B. | 180˚C | 
| C. | 190˚C | 
| D. | 200˚C | 
| Answer» C. 190˚C | |
| 7. | At what temperature is the filtrate dried in a TDS laboratory test? | 
| A. | 100˚C | 
| B. | 102˚C | 
| C. | 103˚C | 
| D. | 105˚C | 
| Answer» D. 105˚C | |
| 8. | TDS decreases the efficiency of hot water heaters. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 9. | _______ is used as an indicator test to determine the general quality of the water. | 
| A. | Oxidation test | 
| B. | Reduction test | 
| C. | Total dissolved solids test | 
| D. | Organic test | 
| Answer» D. Organic test | |
| 10. | Total dissolved solids consist of cations only. | 
| A. | True | 
| B. | False | 
| Answer» C. | |
| 11. | _______ is the universal solvent. | 
| A. | Organic solvents | 
| B. | Inorganic solvents | 
| C. | Water | 
| D. | Acid | 
| Answer» D. Acid | |
| 12. | Cations with ______ increase corrosivity. | 
| A. | Bromide | 
| B. | Chloride | 
| C. | Iodide | 
| D. | Sulphide | 
| Answer» C. Iodide | |