Q. No.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
| 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
Monascus purpureus is a yeast used commercially in the production of
(1) ethanol
(2) streptokinase for removing clots from the blood vessels.
(3) citric acid
(4) blood cholesterol lowering statins.
A patient brought to a hospital with myocardial infarction is normally immediately given
1. penicillin
2. streptokinase
3. cyclosporin-A
4. statins
Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?
(1) Azotobacter
(2) Aspergillus
(3) Glomus
(4) Trichoderma
Yeast is used in the production of
(1) citric acid and lactic acid
(2) lipase and pectinase
(3) bread and beer
(4) cheese and butter
Which one of the following helps in absorption of phosphorus from soil by plants?
1. Rhizobium
2. Anabaena
3. Frankia
4. Glomus
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