The non-biotic pollutant of underground water is

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Q: 54 (UPPSC/2012)
The non-biotic pollutant of underground water is

question_subject: 

Science

question_exam: 

UPPSC

stats: 

0,67,6,1,4,67,1

keywords: 

{'underground water': [0, 0, 1, 1], 'algae': [2, 0, 0, 0], 'bacteria': [4, 1, 2, 3], 'arsenic': [1, 0, 2, 3]}