BOD of waste water is estimated by measuring the amount of:

(1) total inorganic matter

(2) biodegradable organic matter

(3) oxygen evolution

(4) oxygen consumption.

The free-living fungus Trichoderma can be used for:

1. killing insects

2. biological control of plant diseases

3. controlling butterfly caterpillars

4. producing antibiotics

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

In the given diagram the gas X can be :

1. Hydrogen

2. Carbon monoxide

3. Ammonia

4. Oxygen