Identify the option which correctly describes the above table :- Primary treatment of water Secondary treatment of water Tertiary treatment of water (A) Filteration use of aeration tank use of UV & O_3 (B) use of oxidation pond use of aeration tank use of chlorine (C) Sedimentation Anaerobic sludge digester use of O_3 (D) use of UV & O_3 catalytic converter Activated sludge process

Correct Answer is : Only B & D are incorrect

NEET 2021 Model Test Paper 3

Question : 102 of 180

Marks: +1, -0

Identify the option which correctly describes the above table :-

	Primary treatment of water	Secondary treatment of water	Tertiary treatment of water
(A)	Filteration	use of aeration tank	use of UV & O‌3
(B)	use of oxidation pond	use of aeration tank	use of chlorine
(C)	Sedimentation	Anaerobic sludge digester	use of O‌3
(D)	use of UV & O‌3	catalytic converter	Activated sludge process

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