Environment & Ecology·MCQ Practice

River Pollution — MCQ Practice

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Version 1Updated 5 Mar 2026

Interactive MCQ Practice

Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 5 questions available.

Q1medium

Consider the following statements about river pollution in India: 1. Biological Oxygen Demand (BOD) levels above 30 mg/L indicate severe organic pollution 2. The National Mission for Clean Ganga covers only the main stem of river Ganga 3. Thermal pollution from power plants primarily affects dissolved oxygen levels in rivers 4. Zero Liquid Discharge is mandatory for all industries in water-stressed areas Which of the statements given above are correct?

Q2easy

Which of the following best describes the 'polluter pays' principle in the context of river pollution control in India?

Q3medium

Consider the following pairs: 1. Ganga Action Plan - 1985 2. Water Pollution Control Act - 1974 3. National River Conservation Plan - 1995 4. National Mission for Clean Ganga - 2011 How many of the above pairs are correctly matched?

Q4easy

Eutrophication in rivers is primarily caused by:

Q5medium

The Central Pollution Control Board classifies rivers into different categories based on their designated use. Which category represents the highest water quality standard?

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