Which of the following in sewage treatment removes suspended solids?
1. Secondary treatment
2. Primary treatment
3. Sludge treatment
4. Tertiary treatment
Column I | Column II | ||
A. | Citric acid | 1. | Trichoderma |
B. | Cyclosporin | 2. | Clostridium |
C. | Statins | 3. | Aspergillus |
D. | Butyric Acid | 4. | Monascus |
1. A-3, B-1, C-2, D-4
2. A-3, B-1, C-4, D-2
3. A-1, B-4, C-2, D-3
4. A-3, B-4, C-1, D-2
1. Rhizobium
2. Nostoc
3. Mycorrhiza
4. Agrobacterium
1. | Clostridium | 2. | Trichoderma |
3. | Aspergillus | 4. | Saccharomyces |
1. bioremediation of contaminated soils
2. reclamation of wastelands
3. gene transfer in higher plants
4. biological control of soil-borne plant pathogens
Which one of the following pairs is wrongly matched?
1. Methanogens - Gobar gas
2. Yeast - Ethanol
3. Streptomycetes - Antibiotic
4. Coliforms - Vinegar
Select the correct group of biocontrol agents:
1. Nostoc, Azospirillum, Nucleopolyhedrovirus
2. Bacillus thuringiensis. Tobacco mosaic virus, Aphids
3. Trichoderma, Baculovirus, Bacillus thuringiensis
4. Oscilatoria, Rhizobium, Trichoderma
Match the following :
(a) |
Lactobacillus |
(i) |
Cheese |
(b) |
Saccharomyces cerevisiae |
(ii) |
Curd |
(c) |
Aspergillus niger |
(iii) |
Citric Acid |
(d) |
Acetobacter aceti |
(iv) |
Bread |
(v) |
Acetic acid |
Options: | (a) | (b) | (c) | (d) |
1. | (ii) | (i) | (iii) | (v) |
2. | (ii) | (iv) | (v) | (iii) |
3. | (ii) | (iv) | (iii) | (v) |
4. | (iii) | (iv) | (v) | (i) |
During secondary treatment, major part of activated sludge is pumped into tanks called
1. Aerobic sludge digesters.
2. Anaerobic sludge digesters.
3. Primary sludge digesters.
4. Settling tanks.