(c)
बायोगैस संयंत्र
(d) जल पशु
48. Water pollution can be identified by testing its:
(a) pH level
(b) Biological Oxygen Demand (BOD)
(c) Both (a) and (b)
(d) None of these
जल प्रदूषण कैसे मापा जाता है।
(a) pH level
(b) BOD
(c) दोनो
(d) कोई नहीं
Answers
Answered by
1
Answer:
Both (a) and (b)
Explanation:
Answered by
0
options no.(c) Both (a)and(b)
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