Biodiversity Quiz PDF: Questions and Answers - 123

MCQ 611: 'DNA' stands for

1. Denucleic acid
2. Detoxiribonucleic acid
3. Deoxyribonucleic acid
4. Deoxyrinonucleic acid

MCQ 612: Which solids remain floating in the sewage ?

1. Suspended solids
2. Colloidal Solids
3. Dissolved solids
4. Settatleable solids

MCQ 613: What are characterization of desert ?

1. Lack of water
2. Abundance of sand
3. Excess of water
4. Both aand b

MCQ 614: How much BOD reduces in preliminary treatment ?

1. 15 to 30%
2. 17 to 60%
3. 19 to 80%
4. 10 to 90%

MCQ 615: 70% of sulphur dioxide comes from:

1. Industries
2. Coal power plants
3. Vehicles
4. Domestic cooking