Which of the following bacteria help in nitrogen fixation from atmosphere?

A. Azotobacter

B. Rhizobium

C. Azospirillum

D. Lactobacillus

(1) A, C, D

(2) A, B, C, D

(3) B, C, D

(4) A, B, C

Yeasts have been used for the commercial production of all except:

(1) Wine

(2) Whisky

(3) Ethanol

(4) Curd

Methanogens are found in:

A. Ethanol

B. Organic acids

C. Anaerobic sludge

D. Rumen of cattle

(1) A, C, D

(2) C, D

(3) B, C, D

(4) A, B

The technology of biogas production in India has been developed by the efforts of:

A. Khadi and Village Industries Commision (KVIC)

B. Indian Council of Agricultural Research (IARI)

C. Indian Agricultural Research Institute (IARI)

D. Indian Council of Medical Research (ICMR)

(1) A, C, D

(2) C, D

(3) A, C

(4) A, B

Which of the following cyanobacteria can fix atmospheric nitrogen?

A. Nostoc

B. Anabaena

C. Oscillatoria

D. Yeast

1. A, C, D

2. C, D

3. A, C

4. A, B, C

Which of the following food items is produced by fermentation by the microbes?

A. Idli

B. Dosa

C. Toddy

D. Cheese

(1) A, B, C, D

(2) C, D

(3) A, C

(4) A, B, C

Which industrial products are synthesized from microbes?

A. Antibiotics

B. Fermented beverages

C. Enzymes and chemicals

D. Bioactive molecules

(1) A, C, D

(2) A, B, C, D

(3) A, C

(4) A, B, C

The large vessels for growing microbes on an industrial scale are called:

(1) Petri dish

(2) Digestors

(3) Biogas vessel

(4) Fermentors

Which of the following organisms is used in the production of beverages?

1. Penicillium notatum

2. Saccharomyces cerevisiae

3. Aspergillus niger

4. Clostridium butylicum

The gas responsible for puffing-up appearance of dough comes from:

(1) Aerobic respiration

(2) Fermentation

(3) Photosynthesis

(4) Photorespiration