Computer · Environmental Engineering
IS 10500 : 2012 (पेयजल विशिष्टता) के अनुसार, पीने के पानी में रंग के लिए स्वीकार्य सीमा (acceptable limit) क्या है?
- 120 हेज़न इकाइयाँ (Hazen units)
- 210 हेज़न इकाइयाँ (Hazen units)
- 35 हेज़न इकाइयाँ (Hazen units)✓
- 415 हेज़न इकाइयाँ (Hazen units)
सही उत्तर देखें
5 हेज़न इकाइयाँ (Hazen units)
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