Q. No.The primary treatment of wastewater involves the removal of:
1.
dissolved impurities
2.
stable particles
3.
toxic substances
4.
harmful bacteria
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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 and Khadi & Village Industries Commission |
| 4. | Indian Oil Corporation |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The free-living fungus Trichoderma can be used for:
1. killing insects
2. biological control of plant diseases
3. controlling butterfly caterpillars
4. producing antibiotics
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following is not a nitrogen-fixing organism?
| 1. | Anabaena | 2. | Nostoc |
| 3. | Azotobacter | 4. | Pseudomonas |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Big holes in Swiss cheese are made by:
| 1. | a machine |
| 2. | a bacterium that produces methane gas |
| 3. | a bacterium producing a large amount of carbon dioxide |
| 4. | a fungus that releases a lot of gases during its metabolic activities. |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The residue left after methane production from cattle dung is:
| 1. | burnt | 2. | buried in landfills |
| 3. | used as manure | 4. | used in civil construction |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Match the items in Column ‘A’ and Column ‘B’ and choose the correct answer:
| Column I | Column II | ||
| A. | Lady bird | i. | Methanobacterium |
| B. | Mycorrhiza | ii. | Trichoderma |
| C. | Biological control | iii. | Aphids |
| D. | Biogas | iv. | Glomus |
The correct answer is:
1. A-ii, B-iv, C-iii, D-i
2. A-iii, B-iv, C-ii, D-i
3. A-iv, B-i, C-ii, D-iii
4. A-iii, B-ii, C-i, D-iv
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following pairs is not correctly matched?
1. Serratia - Drug addiction
2. Spirulina - Single cell protein
3. Rhizobium - Biofertilizer
4. Streptomyces - Antibiotic
© 2024 GoodEd Technologies Pvt. Ltd.