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. |
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 |
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 |
Fruit juices can be clarified with the use of:
1. | Lipases | 2. | Papain |
3. | Pectinase and protease | 4. | Glucoamylase |
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 |
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 |
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 |
Large holes in Swiss cheese are the result of fermentation by:
1. Streptococcus salivarius
2. Propionibacterium shermanii
3. Lactobacillus helveticus
4. Lactobacillus delbrueckii
During the secondary or biological treatment of sewage water:
I. | The BOD of the wastewater gets reduced significantly. |
II. | The activated sludge contains aerobic micro-organisms that can clump together. |
III. | The entire activated sludge is pumped into anaerobic sludge digesters. |
1. Only I is correct
2. Only I and II are correct
3. I, II and III are correct
4. I, II and III are incorrect
Aspergillus niger is used in the commercial production of:
1. | Citric acid | 2. | Acetic acid |
3. | Lactic acid | 4. | Butyric acid |