Which bacteria is utilized in a Gobar gas plant:
1. Methanogens
2. Nitrifying bacteria
3. Ammonifying bacteria
4. Denitrifying bacteria
During the formation of bread it becomes porous due to the release of CO2 by the action of:
1. | Yeast | 2. | Bacteria |
3. | Virus | 4. | Protozoans |
Which of the following is used to manufacture ethanol from starch:
1. Penicillin
2. Saccharomyces
3. Azotobactor
4. Lactobacillus
During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded:
1. Lipids
2. Lignin
3. Hemi-cellulose
4. Cellulose
Which of the following is true pair of biofertilizers:
1. Azolla and BGA
2. Nostoc and legume
3. Rhizobium and grasses
4. Salmonella & E. Coli
What is B.O.D.:
1. The amount of utilized by organisms in the water
2. The amount of utilized by microorganisms for decomposition
3. The total amount of present in water
4. All of the above
Which one produces gas by decomposing the gobar (Dung) in gobar gas:
1. Fungus
2. Virus
3. Methanogenic bacteria
4. Algae
Azolla is used in the cultivation of:
1. | Maize | 2. | Sorghum |
3. | Wheat | 4. | Rice |
A major component of gobar gas is:
1. Methane
2. Ethane
3. Butane
4. Ammonia
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