Question

One of the most polluted river in Maharashtra is
A. Brahmaputra
B. Ganga
C. Jamuna
D. Panchaganga

Answer 1

Hint: A river is a flowing waterbody that flows from the place of its origin towards an ocean. It is a freshwater body and in its course of flow it may meet with other such rivers, lakes or sea. They are an important part of the water cycle and support a distinct flora and fauna. They are important sources of water supply, hydroelectricity generation and irrigation supply.

Complete step by step answer: Rivers are bodies of water that flow down hill from the force of gravity and usually fall into the ocean. A river can be wide, deep or shallow and depends on the amount of water and sediments as runoff. The water flowing in the river is freshwater as water contains very less amount of salts. The water system supports several types of aquatic plants and organisms that are well adapted to life in these flowing waters.
Rivers are harnessed for various types of uses such as drinking, irrigation, electricity generation, transportation etc. Several human and industrial activities affect the ecosystem of rivers. THe contamination of water as a result of contamination from various human activities such as discharge of sewage, runoff pesticides, industrial wastes and other toxic discharges. It is one of the major causes of water borne diseases due to growth of several types of bacteria and other pathogenic microorganisms.
THe Panchganga is one of the most polluted rivers in Maharashtra. It is one of the most important rivers of India and is located in Maharashtra. It emerges from Prayag Sangam near Kolhapur district of Maharashtra. It is joined by four streams which are the Kasari, Kumbhi, Tulsi and Bhogawati. THe riverbed is shallow and it is very fertile for the crops that are grown during the different months.
The main reason of pollution of this river is the discharge of effluents and industrial wastes from the nearby settlements and industries. This had led to pollution of the river and it caused the water coloration to turn green mainly due to the formation of algae and bacteria. Many textile miles discharge their wastes directly into the river water. Eichornia crassipes is a commonly occurring aquatic weed found in this river.
Ganga is one of the most important rivers in India and arises from the Himalayas. It flows through the states of Uttarakhand, Uttar Pradesh, Bihar, West Bengal and finally falls into the Bay of Bengal.
Jamuna is the second largest tributary river of Ganga and crosses several states of Haryana, Uttar Pradesh and Delhi.
Brahmaputra flows in Assam and through the countries Tibet, India and Bangladesh.
Therefore, the correct option is option D.

Note: Rivers are an important source of freshwater that are polluted due to various human activities and deposition of untreated discharge. The Panchganga is one of the most polluted rivers in Maharashtra and the main reason of pollution is sewage discharge, industrial effluent discharges such as from the textile industries.