The coliform group of bacteria includes all the __________________ bacilli.

Which of the following organism does not belong to coliform group of bacteria?

Coliforms are natural inhabitants of the large intestine of human and animals.

Which of the following acts as a carbon source for Enterobacter aerogenes?

What will be the plate count of good quality water?

Among the following which microorganism acts as a representative of fecal streptococci group?

Thiobacillus can produce an acidity in the range of pH __________

In which of the following organism does iron secreted to form stalks or ribbons attached to the cell?

Which of the following sewerage systems carry domestic and industrial wastewater?

The more oxidizable organic material, the lesser the BOD.

Which of the following is a strict anaerobe?

In which of the following treatment involve oxidation of organic constituents of the wastewater?

The upper region of the trickling filter is favorable for the growth of _____________

Activated sludge usually employs an aeration period of ________________

Oxidation ponds are very deep ponds.

Trickling filter is used in which of the following wastewater treatment processes?

Belt filter presses are used in which of the following process?

Which of the following organism occurs on the skin of fresh poultry?

What is the pH of the bananas?

Raw milk of good sanitary quality will develop sweet flavour.

Which among the following is a gas producer organism?