STB 327 Theory Questions: Natural Stream Purification – Ecosystem Constituents – Wastewater Analysis Parameters

300 Level Department of Science Laboratory Technology exam questions and detailed answers. Download the answers in document format. Correct, detailed, and straightforward answers.

Questions:

a. A stream is capable of purifying itself naturally. Explain how this happens?

b. Discuss in details with the aid of a diagram, the constituents of an ecosystem.

c. List eight parameters for analyzing wastewater

ii. Differentiate between BOD test and COD test.

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