Which of the following pollutants is biodegradable ?
...Which of the following pollutants is biodegradable ?
Sewage
Plastics
Metal scrape
Lead compounds
Hydrogen sulphide
Correct answer is A
No explanation has been provided for this answer.
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What is the percentage composition of carbon in Ca(HCO3)2 ? [ Ca = 40.0, 0= 16.0, C = 12.0,...
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