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UPSC Civil ServicesPrelims2023General Studies Paper I
Question
QQ55. With reference to the role of biofilters in Recirculating Aquaculture System, consider the following statements : 1. Biofilters provide waste treatment by removing uneaten fish feed. 2. Biofilters convert ammonia present in fish waste to nitrate. 3. Biofilters increase phosphorus as nutrient for fish in water. How many of the statements given above are correct?
Options
- A Only one
- B Only two
- C All three
- D None
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Correct Answer
B Only two
Model Answer
Answer: option B, as per UPSC's final answer key (Series A).