18. The filter over which sewage is sprinkled is called as A.Trickling filter B.Percolating filter C.Contact bed D.Intermittent sand filter
Answer: Option A Solution: A trickling filter, also known as percolating filter, is an artificial bed of stone or broken brick material over which waste water or sewage is allowed to sprinkle or to trickle. It is then collected through the under drainage system. 19. Main source of lead pollution is from A.Sewage B.Leaded gasoline C.Tobacco D.Insecticides Answer & Solution Discuss in Board Save for Later 20. An example of major air pollutant is A.Oxygen B.Carbon monoxide C.Helium D.Carbon dioxide Answer & Solution Discuss in Board Save for Later 1234567891011121314 Read More Section(Chemistry) Each Section contains maximum 70 questions. To get more questions visit other sections. Chemistry - Section 1 Chemistry - Section 2 Chemistry - Section 3 Chemistry - Section 4 Chemistry - Section 5 Chemistry - Section 6 Chemistry - Section 7 Chemistry - Section 8 Chemistry - Section 9 Chemistry - Section 10 Chemistry - Section 11 Chemistry - Section 13 Chemistry - Section 14 Chemistry - Section 15 Chemistry - Section 16 Chemistry - Section 17 Copyright © 2022 Examveda.com About Us | Terms & Condition | Privacy Policy | Contact Us
