Q. What is used to convert wastelands into agricultural lands?

View solution

Q. Organic agriculture advocates avoiding the use of_____________________

View solution

Q. Integrated pest management reduces the excess use of fertilizers.

View solution

Q. Which is the most input of waste causing marine pollution?

View solution

Q. Why ship accidents cause marine pollution?

View solution

Q. Which of the following is the greatest volume of waste discharge to water?

View solution

Q. When does the rate of aerobic oxidation reduced in the sewage that is reduced to the water?

View solution

Q. Which of the following way is used to reduce the pollution load on marine water?

View solution

Q. The Deepwater Horizon oil spill considered amongst the largest oil spills in history.

View solution

Q. What is the reason that oil pollution attracts the greatest attention?

View solution

Q. The natural process of emulsification of oil in water can be accelerated through the use of chemical dispersants.

View solution

Q. What is the first step in primary sewage treatment plants?

View solution

Q. What is called for the removal of sand, gravel in the primary treatment of sewage treatment plant?

View solution

Q. What is called for the place where lighter, organic material settles in the primary treatment of sewage plant?

View solution

Q. Where can we find rotating arm sprays in sewage treatment?

View solution

Q. In which secondary treatment of sewage treatment sludge is broken down in an anaerobic digester?

View solution

Q. In sewage treatment of oxidation pond we can see the water up to 2 meters deep.

View solution

Q. In which of the following treatment of sewage plant we can find disinfection as a step?

View solution

Q. How many percentage of BOD removes in primary treatment?

View solution

Q. What is the main objective of secondary treatment of sewage plants?

View solution