Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) People Development & Environment Environmental Issues Pollution
Dissolved Oxygen (DO), a water quality parameter, is essential in which of the following water bodies/sources?
A. River Water
B. Lake Water
C. Tap Water
D. Underground Water
E. Pond Water
Choose the most appropriate answer from the options given below:
1. A, B and E Only
2. C and D Only
3. B, D and E Only
4. A, C, D and E Only
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