The primary treatment of waste water involved the removal of:

(1) dissolved impurities

(2) stable substances

(3) toxic substances

(4) harmful bacteria.

Identify the incrrectly matched pair:

1. Trichoderma harzianum -  Biocontrol

2. Aspergillus niger  - source of citric acid

3. Baculovirus - narrow spectrum species specific insecticides

4. Monascus purpureus - source of cholesterol synthesizing enzyme

Identify the incorrectly matched pair 

Identify the incorrect matched pair:

1. Trichoderma harzianum: Cyclosporin A

2. Monascus purpureus: Statins

3. Aspergillus niger: Citric acid

4. Streptococcus pyogenes: Clot buster

Identify the incorrectly matched pair:

Baculoviruses are:

1. Species specific, narrow spectrum insecticides

2. Species specific, broad spectrum insecticides

3. Non specific, narrow spectrum inseticides

4. Non specific, broad spectrum insecticides

Gases found in biogas are:
1. Carbon dioxide is the only gas
2. Methane is the only gas
3. Carbon dioxide, hydrogen sulphide and Methane
4. Carbon dioxide, hydrogen cyanide and Methane

High value of BOD (Biochemical Oxygen Demand) indicates that

1. Water is pure

2. water is highly polluted

3. water is less polluted

4. Consumption of organic matter in the water is higher by the microbes

Which of the following in sewage treatment removes suspended solids?

(1) Tertiary treatment

(2) Secondary treatment

(3) Primary treatment

(4) Sludge treatment

Which of the following is correctly matched for the product produced by them?

1. Acetobacter aceti : Antibiotics

2. Methanobacterium : Lactic acid

3. Penicillium notatum : Acetic Acid

4. Saccharomyces cerevisiae : Ethanol