MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The excess of which ion in drinking water can lead to blue baby syndrome? |
| A. | Aluminum ion |
| B. | Copper ion |
| C. | Sulphate ion |
| D. | Nitrate ion |
| Answer» E. | |
| 2. |
The maximum limit of which of the following in drinking water should be 50 ppb? |
| A. | Lead |
| B. | Sulphate |
| C. | Nitrate |
| D. | Fluoride |
| Answer» B. Sulphate | |
| 3. |
Water should be tested for fluoride ion concentration for drinking purposes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
What is the full form of PCB(in the context of chemistry)? |
| A. | Printed Circuit Boards |
| B. | Polychlorinated biphenyls |
| C. | Polychemical biphenyls |
| D. | Primary Chemical Bacteria |
| Answer» C. Polychemical biphenyls | |
| 5. |
What does the addition of phosphate fertilizers into water lead to? |
| A. | Increased algae growth |
| B. | Decreased algae growth |
| C. | Increased growth of decomposers |
| D. | Nutrient enrichment |
| Answer» E. | |
| 6. |
What is the amount of oxygen required by bacteria to break down organic matter present in certain volume of sample of water is called? |
| A. | Bacterial oxidation |
| B. | Bacterial decomposition |
| C. | Biochemical oxygen demand |
| D. | Biological oxygen demand |
| Answer» D. Biological oxygen demand | |
| 7. |
Plants always take in carbon dioxide and release oxygen. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Identify the bacteria not found in human excreta that causes gastrointestinal diseases. |
| A. | Staphylococcus aureus |
| B. | Escherichia coli |
| C. | Streptococcus faecalis |
| D. | Shigella |
| Answer» B. Escherichia coli | |
| 9. |
Pick out the source of organic wastes pollutant from the following. |
| A. | Industries |
| B. | Erosion of soil by agriculture and strip mining |
| C. | Water used for cooling in factories |
| D. | Discharge from food processing factories |
| Answer» E. | |
| 10. |
What is an easily identified source of pollution called as? |
| A. | Specific source |
| B. | Point source |
| C. | Non-point source |
| D. | Polluting source |
| Answer» C. Non-point source | |