List of top Environmental Sciences Questions on Water pollution asked in CUET (PG)

The process by which organisms take up and retain a contaminant through multiple exposure routes, that depend on rate of intake and elimination of the contaminant, is best referred to as:

In general, amount of dissolved Oxygen in water in a lake can vary on day and night basis, as well as on seasonal basis (summer and winter). Solubility of gas is governed by Henry's law and is inversely proportional to temperature of water. Which of the following is most appropriate?

In an aquatic ecosystem, what does a high Biological Oxygen Demand (BOD) value indicate about water quality?