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Secondary sewage treatment is mainly a
Options
(a) physical process
(b) mechanical process
(c) chemical process
(d) biological process
Correct Answer:
biological process
Explanation:
In secondary treatment mainly settled sewage flows to an aerobic biological treatment stage where it comes into contact with micro-organisms which remove and oxidise most of the remaining organic pollutants.
Related Questions: - Lymph vessels are united to form
- Pigment-containing membranous extension in some cyanobacteria are:
- Protein present in the matrix of cartilage is known as
- Coenogametes are found in
- Flowers are unisexual in:
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Conservation and Environmental Issues
(111)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Lymph vessels are united to form
- Pigment-containing membranous extension in some cyanobacteria are:
- Protein present in the matrix of cartilage is known as
- Coenogametes are found in
- Flowers are unisexual in:
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Conservation and Environmental Issues (111)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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