Q. No.Which of the following in sewage treatment removes suspended solids?
(1) Tertiary treatment
(2) Secondary treatment
(3) Primary treatment
(4) Sludge treatment
Which of the following is correctly matched for the product produced by them?
1. Acetobacter aceti : Antibiotics
2. Methanobacterium : Lactic acid
3. Penicillium notatum : Acetic Acid
4. Saccharomyces cerevisiae : Ethanol
Which of the following is wrongly matched in the given table?
| Microbe | Product | Application | |
| 1. | Monascus purpureus | Statins | Lowering of blood cholesterol |
| 2. | Streptococcus | Streptokinase | Removal of clot from blood vessel |
| 3. | Clostridium butylicum | Lipase | Removal of oil stains |
| 4. | Trichoderma polysporum | Cyclosporin-A | Immunosuppressive drug |
2. Vitamin A
3. Vitamin B12
4. Vitamin E
| Column I | Column II | ||
| A. | Citric acid | 1. | Trichoderma |
| B. | Cyclosporin | 2. | Clostridium |
| C. | Statins | 3. | Aspergillus |
| D. | Butyric Acid | 4. | Monascus |
1. A-3, B-1, C-2, D-4
2. A-3, B-1, C-4, D-2
3. A-1, B-4, C-2, D-3
4. A-3, B-4, C-1, D-2
Match the following list of microbes and what they are used for:
| A. | Saccharomyces cerevisiae | 1. | Production of immunosuppressive agents |
| B. | Monascus purpureus | 2. | Ripening of Swiss cheese |
| C. | Trichoderma polysporum | 3. | Commercial production of ethanol |
| D. | Propionibacterium shermanii | 4. | Production of blood-cholesterol-lowering agents |
1. A-3, B-4, C-1, D-2
2. A-4, B-3, C-2, D-1
3. A-4, B-2, C-1, D-3
4. A-3, B-1, C-4, D-2
A high value of BOD (Biochemical Oxygen Demand) indicates that:
| 1. | water is pure |
| 2. | water is highly polluted |
| 3. | water is less polluted |
| 4. | consumption of organic matter in the water is higher by the microbes |
What gases are produced in anaerobic sludge digesters?
1. Methane and CO2
2. Methane, Hydrogen Sulphide and CO2
3. Methane, Hydrogen Sulphide and CO
4. Hydrogen Sulphide and CO2
A good producer of citric acid is:
1. Pseudomonas
2. Clostridium
3. Saccharomyces
4. Aspergillus
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