Chemistry - Environmental Chemistry Question with Solution | TestHub
ChemistryEnvironmental ChemistryWater PollutionMedium2 minQB
ChemistryMediumsingle choice
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Polluted water may have a value of BOD of the order of 17 ppm.
Reason R: BOD is a measure of oxygen required to oxidise both the biodegradable and non-biodegradable organic material in water.
In the light of the above statements, choose the most appropriate answer from the options given below.
Options:
Answer:
C
Solution:
Clean water have BOD less than 5 ppm while highly polluted water has BOD greater or equal to 17 ppm . So, assertion is correct.
BOD is measure of oxygen required to oxidise only bio-degradable organic matter. So, reason is false.
Stream:JEESubject:ChemistryTopic:Environmental ChemistrySubtopic:Water Pollution
⏱ 2mℹ️ Source: QB
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