Which of the following rivers is called the world’s most polluted river?

(a) Ganga River

(b) Chenab River

(c) Cauvery River

(d) Yamuna River

 

(d) Yamuna River

Among the given options, the Yamuna River is often cited as one of the world's most polluted rivers, particularly the 22-kilometer stretch that flows through the city of Delhi.

In this section, the river is often referred to as a "dead river" or a "sewage drain" because it receives enormous amounts of untreated sewage, industrial waste, and domestic garbage. The pollution is so severe that the water is deprived of oxygen, making it unable to support most forms of aquatic life. While the Ganga is also heavily polluted, the concentration of pollutants in the Yamuna through Delhi is exceptionally high.