Which of the following yields citric acid?
1.  Penicillium citrinum
2. Aspergillus niger
3. Saccharomyces
4.  Azospirillium

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 96%
From NCERT
AIPMT - 1998
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Saccharomyces cerevisiae is used in the formation of:
1. Ethanol
2. Methanol
3. Acetic acid
4. Antibiotics

Subtopic:  Industrial Products, Beverages & Antibiotics |
 96%
From NCERT
AIPMT - 1998
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Modern farmers can increase the yield of Paddy up to 50% by the use of:
1.  Cyanobacteria
2.  Rhizobium
3.  Cyanobacteria in Azolla pinnata
4.  Farm yard manure

Subtopic:  Microbes as Biofertilizer |
 60%
AIPMT - 1998
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Azolla is used in the cultivation of:

1. Maize 2. Sorghum
3. Wheat 4. Rice
Subtopic:  Microbes as Biofertilizer |
 53%
From NCERT
AIPMT - 1999
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Which one produces gas by decomposing the gobar (Dung) in gobar gas:
1.  Fungus
2.  Virus
3.  Methanogenic bacteria
4.  Algae

Subtopic:  Microbes in Production of Biogas |
 99%
From NCERT
AIPMT - 1999
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Which of the following is used to manufacture ethanol from starch:

1. Penicillin

2. Saccharomyces

3. Azotobactor

4. Lactobacillus

Subtopic:  Industrial Products, Beverages & Antibiotics |
 96%
From NCERT
AIPMT - 2000
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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

Subtopic:  Microbes as Biofertilizer |
 66%
From NCERT
AIPMT - 2001
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What is B.O.D.:
1. The amount of O2 utilized by organisms in the water
2. The amount of O2 utilized by microorganisms for decomposition
3. The total amount of O2 present in water
4. All of the above

Subtopic:  Microbes in Sewage Treatment |
 62%
From NCERT
AIPMT - 2001
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Which bacteria is utilized in a Gobar gas plant:

1. Methanogens

2. Nitrifying bacteria

3. Ammonifying bacteria

4. Denitrifying bacteria

Subtopic:  Microbes in Production of Biogas |
 98%
From NCERT
AIPMT - 2002
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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
Subtopic:  Microbes in Household Products |
 90%
From NCERT
AIPMT - 2002
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