Which of the following statements are correct?
1. Foul gases are released in case of spray nozzle application but in rotary distribution no such foul gases are released.
2. Aerobic bacteria are predominant organism in tricking filter.
3. The rate of food removal in attached system does not depend on rate of diffusibility of food and O2 into biofilm.
1
Only 1
2
1 and 2
3
2 and 3 only
4
All of the above