Q. No.Lactic Acid Bacteria can check the growth of disease causing:
1.
Bacillus clausii
2.
Helicobacter pylori
3.
Saccharomyces boulardii
4.
Clostridium butyricum
The primary objective of the secondary treatment of sewage water is:
| 1. | the removal of coarse solids and other large materials often found in raw wastewater. |
| 2. | the removal of settleable organic and inorganic solids by sedimentation, and the removal of materials that will float by skimming. |
| 3. | production of biogas that can be used as an efficient fuel, especially in rural households. |
| 4. | the removal of biodegradable dissolved and colloidal organic matter using aerobic biological treatment processes. |
Fleming first observed the antibiotic properties of the mould that makes penicillin. But the credit to develop it into a useful treatment goes to:
| 1. | Selman Waksman | 2. | Florey and Chain |
| 3. | Beadle and Tatum | 4. | Zinder and Lederberg |
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A therapeutic product that is used to prevent the risk of coronary artery disease by its effect on one of the risk factors is obtained from the microbe:
| 1. | Trichoderma polysporum | 2. | Streptococcus pyogenes |
| 3. | Pseudomonas putida | 4. | Monascus purpureus |
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Baculoviruses can play an important role in overall Integrated Pest Management in an ecologically sensitive area because:
| 1. | They are effective against a large number of insects |
| 2. | Their use can help in the conservation of beneficial insects |
| 3. | They do not have any adverse effects on human health |
| 4. | They are cost-effective and can be easily applied as sprays by the farmer |
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Given below are the results of three water samples subjected to BOD test:
| I. | Sample A can be from secondary effluent discharged from an STP. |
| II. | Sample B can be from a river presumed to be mild to moderately polluted. |
| III. | Sample C can be from untreated sewage water. |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Baculoviruses are excellent candidates for:
| 1. | Species-specific, narrow-spectrum insecticidal applications |
| 2. | Species-specific, broad-spectrum insecticidal applications |
| 3. | Biocontrol of fungal diseases |
| 4. | Biocontrol of aphids and mosquitoes |
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In the anaerobic sludge digesters during sewage water treatment:
| 1. | The primary sludge is treated with aerobic microbes and activated sludge is created |
| 2. | The primary sludge is treated with anaerobic microbes and activated sludge is created |
| 3. | The activated sludge is digested by anaerobic microbes producing biogas during the process |
| 4. | The activated sludge is digested by aerobic microbes producing biogas during the process |
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Consider the given two statements:
| I: | BOD is an indirect measure of the organic matter present in the water. |
| II: | The BOD test measures the rate of uptake of oxygen by microorganisms in a sample of water. |
| 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. | Only II is correct. |
| 4. | Both I and II are incorrect. |
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Match each item in column I with one in Column II and select the correct answer from the codes given:
|
Column I |
|
Column II |
|
|
A |
Monascus purpureus |
P |
Thrombolytic |
|
B |
Trichoderma polysporum |
Q |
Immunosuppressant |
|
C |
Streptococcus pyogenes |
R |
Antibiotics |
|
D |
Streptomyces griseus |
S |
Statins |
Codes
|
A |
B |
C |
D |
|
|
1 |
S |
Q |
R |
P |
|
2 |
Q |
S |
P |
R |
|
3 |
Q |
S |
R |
P |
|
4 |
S |
Q |
P |
R |
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