Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 2 (Q.No. 12)
12.
Presence of excess nitrates in river water indicates :
Discussion:
4 comments Page 1 of 1.
Bisma Farooq said:
7 years ago
Presence of Nitrates in sewage indicates that the decompostion of organic nitrogenous matter has come to an end i.e. nitrates are the end products of bacterial decomposition of nitrogenous matter in sewage. Hence their presence means that the water has been polluted in the past.
Kavita said:
8 years ago
Nitrites indicate the presence of partly decomposed organic matter. Partially decomposition will take some time it means pollution is not recent.
(1)
Anomis said:
6 years ago
Presence of free ammonia or organic nitrogen (indicates recent pollution).
Manish Rai said:
7 years ago
Nitrate indicate the full decomposition so past pollution of water.
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