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

Which is the best measure to keep rivers clean?

Answer and explanation

Correct answer: Releasing sewage only after treatment

Sewage and other wastewater may contain germs, harmful chemicals, and large amounts of organic matter. If it enters a river without treatment, it can lower water quality, harm aquatic organisms, spread disease, and make the water unsafe for people. Treatment removes or reduces many pollutants before the water is released. Preventing waste at the source and monitoring discharge are also useful parts of river protection.

Option B is correct because sewage should be treated before it is discharged into a river. Throwing rubbish directly into the water increases pollution, while unplanned construction can damage banks and natural drainage. Stopping a river’s flow does not remove pollutants and can create other environmental problems. Thus, treatment is the most suitable measure among the given choices.

Related tags

River ConservationSewage TreatmentClean Rivers

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.