Q. No.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 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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Fruit juices can be clarified with the use of:
| 1. | Lipases | 2. | Papain |
| 3. | Pectinase and protease | 4. | Glucoamylase |
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Lactic Acid Bacillus, while used for converting milk to curd, increases the nutritional value of curd by adding vitamin:
| 1. | A | 2. | B12 |
| 3. | C | 4. | D |
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Match each item in Column I [biocontrol agent] with one in Column II [pest controlled] and select the answer from the codes given:
|
|
Column I |
|
Column II |
|
A. |
Ladybird |
P. |
Mosquitoes |
|
B. |
Dragonflies |
Q. |
Aphids |
|
C. |
Trichoderma |
R. |
Fungus |
|
D. |
Baculoviruses |
S. |
Virus |
Codes
|
A |
B |
C |
D |
|
|
1. |
P |
Q |
R |
S |
|
2. |
Q |
P |
R |
S |
|
3. |
P |
Q |
S |
R |
|
4. |
Q |
P |
S |
R |
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Cyclosporin A is used as a/an:
| 1. | immuno-suppressive agent in organ transplant patients |
| 2. | clot buster to remove clots from the vessels in heart attack patients |
| 3. | treatment option in advance for HIV infections |
| 4. | agent that lowers blood cholesterol levels |
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