Q. No.The correct chronology of steps involved in the anaerobic digestion during the production of biogas is:
1.
hydrolysis → acidogenesis → acetogenesis → methanogenesis.
2.
hydrolysis → acetogenesis → acidogenesis → methanogenesis.
3.
acetogenesis → acidogenesis → hydrolysis → methanogenesis.
4.
acetogenesis → acidogenesis → methanogenesis → hydrolysis
Rivers may be considered severely polluted when BOD values exceed:
| 1. | 1 mg/L | 2. | 2 mg/L |
| 3. | 4 mg/L | 4. | 8 mg/L |
Consider the given two statements:
| I. | The use of baculoviruses as natural pesticides is advantageous. |
| II. | The high specificity of baculoviruses can be a disadvantage to agriculturists. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
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Consider the given two statements:
| I: | Biogas is considered to be a renewable resource. |
| II: | Its production-and-use cycle is continuous. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Consider the given two statements:
| I: | If biogas is smelled anywhere windows and doors should be opened immediately. |
| II: | The content of toxic hydrogen sulfide has been responsible for serious accidents. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Statins act by selectively inhibiting:
| 1. | HMG CoA synthase | 2. | HMG CoA reductase |
| 3. | Thiolase | 4. | Mevalonate kinase |
Consider the given two statements:
I. Coliform bacteria are a commonly used indicator of sanitary quality of foods and water.
II. Coliforms cause a number of serious illness.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
Consider the given two statements:
| I: | Cyclosporin is used to treat and prevent graft-versus-host disease in bone marrow transplantation and to prevent rejection of kidney, heart, and liver transplants. |
| II: | It selectively inhibits the functions of B lymphocytes acting as an immunosuppressant. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
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Beauveria, Metarhizium, and Paecilomyces are:
1. Mycorrhizal fungi
2. Biofertilizers
3. Entomopathogenic fungi
4. Edible fungi
Feedstocks used in the production of biogas can normally include all the following except:
| 1. | Animal waste | 2. | Sewage |
| 3. | Silage | 4. | Wood |
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