The 'water quality index' (WQI) for drinking water combines:
Choose the correct answer
Only flow rate of the water body
Multiple water quality parameters (pH, BOD, turbidity, etc.) into a single composite index for easy communication
Only BOD and COD values
Temperature of water only
Correct Answer
B. Multiple water quality parameters (pH, BOD, turbidity, etc.) into a single composite index for easy communication
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
WQI: a single composite number representing overall water quality. Various parameters (pH, DO, BOD, turbidity, coliform, TDS, nitrate, heavy metals) are weighted and aggregated using a formula. WQI 0–25: excellent; 26–50: good; 51–75: poor; 76–100: very poor; > 100: unsuitable for drinking. Useful for communicating water quality to public and policymakers.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.