Which of the following yields citric acid?
1. Penicillium citrinum
2. Aspergillus niger
3. Saccharomyces
4. Azospirillium
Saccharomyces cerevisiae is used in the formation of:
1. Ethanol
2. Methanol
3. Acetic acid
4. Antibiotics
The dough kept overnight in warm weather becomes soft and spongy because of:
1. Fermentation
2. Cohesion
3. Osmosis
4. Absorption of carbon dioxide from the atmosphere
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
A major component of gobar gas is:
1. Methane
2. Ethane
3. Butane
4. Ammonia
Azolla is used in the cultivation of:
1. | Maize | 2. | Sorghum |
3. | Wheat | 4. | Rice |
Which one produces gas by decomposing the gobar (Dung) in gobar gas:
1. Fungus
2. Virus
3. Methanogenic bacteria
4. Algae
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