Correct option is C
For waters with EC less than 5 dS/m, the relationship is generally TDS = 640 × EC (ds/m), derived empirically.
For waters with EC less than 5 dS/m, the relationship is generally TDS = 640 × EC (ds/m), derived empirically.
The first IIT that provided agricultural education is
Suggested Test Series
Suggested Test Series
The first IIT that provided agricultural education is