engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Environmental Engineering Quality of Water

स्विमिंग पूल में कुल विघटित ठोस (TDS) _______से अधिक नहीं होना चाहिए।

1
500 mg/L
2
1500 mg/L
3
750 mg/L
4
2000 mg/L
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