Q. No.The virus shown here is a causative agent of:
1.
Intestinal infections
2.
Respiratory infections
3.
CNS infections
4.
Genito-urinary infections
Which one of the following impurities is easiest to remove from wastewater?
| 1. | Bacteria | 2. | Colloids |
| 3. | Dissolved solids | 4. | Suspended solids |
In the given diagram, the gas X can be:
| 1. | Hydrogen sulfide | 2. | Carbon monoxide |
| 3. | Ammonia | 4. | Oxygen |
The rising of dough is due to:
1. Multiplication of yeast
2. Production of CO2
3. Emulsification
4. Hydrolysis of wheat flour starch into sugars
Methanogenic bacteria are not found in:
1. rumen of cattle
2. gobar gas plant
3. bottom of water-logged paddy fields
4. activated sludge
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 |
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
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 |
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 |
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