Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

What is a common cause of river pollution?

Answer and explanation

Correct answer: Untreated wastewater and waste

Direct answer: Option B is correct. River pollution commonly occurs when untreated sewage, wastewater, industrial discharge, plastics, or other waste enters a river. ‘Untreated’ means the harmful material has not been cleaned or processed before release. The step-by-step chain is: human activity produces waste; waste enters the river; pollutants change water quality and may harm aquatic life and human health. Option A is wrong because properly treated clean water is not normally a pollution source. Option B directly names untreated wastewater and waste, so it is correct. Option C is wrong because protecting forests generally reduces erosion and supports cleaner water. Option D is wrong because rainwater harvesting conserves water and does not normally pollute a river. Memory cue: untreated waste entering water means pollution.

Related tags

River PollutionWastewaterWater Quality

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.