Environmental Science and Engineering
GATE ES Groundwater Resources PYQs
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Questions 11–11 of 11. Imported answers require independent review unless marked reviewed.
Question 47
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An underground hazardous waste storage tank is leaking. The contaminant concentration directly beneath the site is 0.5 mg/L. The contaminant is travelling at an effective rate of 0.4 m per day towards a water well which is 2 km away. Assume that the degradation of the contaminant follows a first order reaction, and the initial concentration of the contaminant becomes half in 10 years. In this case, the contaminant concentration expected at the well under steady state conditions is ______ mg/L (rounded off to two decimal places).
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