Which of the following statements is correct? — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Water pollution often leads to the accumulation of organic waste, which increases the Biochemical Oxygen Demand (BOD) as aerobic decomposers multiply. Step 2: This rapid consumption of dissolved oxygen depletes the oxygen levels in the water body. Step 3: As a result, dissolved oxygen becomes unavailable to aquatic organisms, including water plants that require oxygen for respiration, corresponding to option (c).