Sewage Treatment Plant objective questions and answers
1. The pH value of sewage is determined with the help of
A.Imhoff cone
B.Turbidimeter
C.Potentionmeter
D.None of these
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C. Potentionmeter
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2. The pressure of free ammonia in sewage, is detected by
A. Boiling
B. Adding potassium permanganate
C. Adding suphuric acid
D. Phenol-di-sulphuricacid
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3. The average temperature of sewage is taken as
A. 00 C
B. 50 C
C. 100 C
D. 200 C
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4. The presence ofammonia in sewage is detected by
A.Boiling
B.Adding salt
C.Adding potassium permanganate
D.Adding sulphuric acid
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5. The sewage traetment units in which anaerobic decomposition of organic matter is used, are called
A.Imhoff tanks
B.Tricking filters
C.Sludge sedimentation tanks
D.None of these
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