Question

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calculated answer with pie chart✌✌✌✌


Collect data of major river systems in India on the basis of pollution level. Represent it through a pie chart. Suggest any two ways for reducing pollution level of rivers through a presentation.​

Answer 1

Here's your answer!!

the following data may be a bit old... the data may be presented using histograms.

Sabarmati : 4 mg/L or BODBOD : biochemical oxygen demand.In 2010 the statistics are:

# Markanda: 590 mg Oxygen /liter BOD Amlakhadi : 353 Kali: 364 Yamuna canal: 247 BOD Yamuna near Delhi: 70 Betwa: 58

The above are the worst affected. Near cities and major towns the rivers are badly affected. In rural areas they are better.BOD levels of 8 mg/L or less is acceptable... below 2 mg/L is good water. # Ganga : at Rishikesh 1.5 mg Oxygen/L.

at kanpur : 5 mg/LBrahmaputra:

At gauhati - very high. at other locations : 2 mg /L or less

Tapi : 2 mg/L in some areas. in cities and towns, about 13 mg/L BOD

Narmada : less than 2.5 mg/L BOD

Mahanadi : less than 1 mg O / Litre to 4 in cities or chattisgarh

Krishna: 1 to 3 in many areas... 10 in many cities/towns.... Around Pune: 28 mg/L

Cauvery : generally from 1 mg/L to 3 mg/L

Ganga : 4 - 8 mg / liter BOD

Godavari : 5 BOD

Vitharini (Bitarni) : 2 mg/l

Narmada : 2 mg/l

Mahi : 2.5 mg//l