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23Oct 2026

Yamuna’s Toxic Froth Returns Amid Winter Pollution

YAMUNA’S TOXIC FROTH RETURNS AMID WINTER POLLUTION WHY IN NEWS ? Thick layers of toxic white froth have reappeared on the Yamuna River near Kalindi Kunj, Delhi, as falling temperatures and water turbulence intensify foam formation. The recurring pollution problem has renewed concerns over untreated sewage, industrial effluents and the effectiveness of existing river-cleaning measures. …

25Sep 2025

Acids, Bases & Salts: Properties and Applications

This image provides an easy overview of the classification, properties, and uses of acids, bases, and salts, along with an introduction to the pH scale and its real-world relevance. It is ideal for competitive exams and UPSC preparation, strengthening core Science concepts in General Studies.