Q. No.The primary treatment of waste water involved the removal of:
(1) dissolved impurities
(2) stable substances
(3) toxic substances
(4) harmful bacteria.
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
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
Match Column I with Column II and select the correct option using the codes given below
|
Column I |
Column II |
|
A. Citric acid |
1. Trichoderma |
|
B. Cyclosporin |
2. Clostridium |
|
C. Statins |
3. Aspergillus |
|
D. Butyric acid |
4. Monascus |
Codes
|
A |
B |
C |
D |
|
|
(1) |
3 |
1 |
2 |
4 |
|
(2) |
3 |
1 |
4 |
2 |
|
(3) |
1 |
4 |
2 |
3 |
|
(4) |
3 |
4 |
1 |
2 |
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 |
| A. Saccharomyces cerevisiae | i. Production of immunosuppressive agents |
| B. Monascus purpureus | ii. Ripening of Swiss Cheese |
| C. Trichoderma polysporum | iii. Commercial production of ethanol |
| D. Propionibacterium sharrmanii | iv. Production of blood-cholesterol lowering agents |
Codes
| A | B | C | D | |
| 1. | iii | iv | i | ii |
| 2. | iv | iii | ii | i |
| 3. | iv | ii | i | iii |
| 4. | iii | i | iv | ii |
What gases are produced in anaerobic sludge digesters?
1. Methane and CO2 only
2. Methane, Hydrogen sulphide and CO2
3. Methane, hydrogen sulphide and O2
4. Hydrogen sulphide and CO2
During sewage treatment, biogases are produced, which include
1. methane, hydrogen sulphide and carbon dioxide
2. methane, oxygen and hydrogen sulphide
3. hydrogen sulphide, methane and sulphur dioxide
4. hydrogen sulphide, nitrogen and methane
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