Q. No.Match the following column of bacteria and their commercially important products.
Column l
Column ll
A
Aspergillus niger
1
Lactic acid
B
Acetobacter aceti
2
Butyric acid
C
Clostridium butylicum
3
Acetic acid
D
Lactobacillus
4
Citric acid
Codes
A
B
C
D
(1)
2
3
4
1
(2)
2
4
3
1
(3)
4
3
2
1
(4)
4
1
3
2
Column l
Column ll
Codes
Match the following column of bioactive substances and their roles.
|
Column l (Bioactive Substance) |
Column ll (Role) |
||
|
A. |
Stain |
1. |
Removal of oil stains |
|
B. |
Cyclosporin A |
2. |
Removal of clots from blood vessels |
|
C. |
Streptokinase |
3. |
Lowering of blood cholesterol |
|
D. |
Lipase |
4. |
lmmuno-suppressive agent |
Choose the correct match
| A | B | C | D | |
| (1) | 2 | 4 | 3 | 1 |
| (2) | 4 | 1 | 2 | 3 |
| (3) | 3 | 4 | 2 | 1 |
| (4) | 3 | 2 | 1 | 4 |
The primary treatment of waste water involves the removal of
1. dissolved impurities
2. stable particles
3. toxic substances
4. harmful bacteria
BOD of waste water is estimated by measuring the amount of
1. total organic matter
2. biodegradable organic matter
3. oxygen evolution
4. oxygen consumption
Which one of the following alcoholic drinks is produced without distillation?
1. Wine
2. Whisky
3. Rum
4. Brandy
The technology of biogas production from cow dung was developed in India largely due to the efforts of
| 1. | Gas Authority of India |
| 2. | Oil and Natural Gas Commission |
| 3. | Indian Agricultural Research Institute, Khadi and Village Industries Commission |
| 4. | Indian Oil Corporation |
The free-livings fungus Trichoderma can be used for
1. killing insects
2. biological control of plant diseases
3. controlling butterfly caterpillars
4. producing antibiotics
What would happen if oxygen availability to activated sludge flocs is reduced?
| 1. | It will slow down the rate of degradation of organic matter. |
| 2. | The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs. |
| 3. | Floes would increase in size as anaerobic bacteria would grow around floes. |
| 4. | Protozoa would grow in large numbers. |
Mycorrhiza does not help the host plant in
1. enhancing its phosphorus uptake capacity
2. increasing its tolerance to drought
3. enhancing its resistance to root pathogens
4. increasing its resistance to insects
Which one of the following is not a nitrogen-fixing organism?
1. Anabaena
2. Nostoc
3. Azotobacter
4. Pseudomonas
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