UPSC CAPF AC 2026 Paper 1 · Question 90
Question 90 of the UPSC CAPF (AC) 2026 Paper I (19 July 2026). Try it first, then open the answer and explanation.
Which of the following statements about eutrophication is/are correct? 1. Eutrophication takes place in young lakes when the water is cold and clear. 2. Eutrophication is caused by nutrient enrichment in water bodies. Select the answer using the code given below.
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
सुपोषण (eutrophication) के बारे में निम्नलिखित में से कौन-सा/कौन-से कथन सही है/हैं? 1. सुपोषण तरुण झील में तब घटित होता है, जब जल शीतल और स्वच्छ होता है। 2. जलाशयों में पोषक समृद्धि के कारण सुपोषण होता है। नीचे दिए गए कूट का प्रयोग कर उत्तर चुनिए।
- केवल 1
- केवल 2
- 1 और 2 दोनों
- न तो 1 और न ही 2
Show answer
Answer: (2) 2 only
उत्तर: (2) केवल 2
Eutrophication is the enrichment of a water body with nutrients such as nitrates and phosphates, which fuels algal growth and gradually ages the lake, so statement 2 is correct. A young lake with cold, clear water is nutrient-poor and supports little life; it is the state before eutrophication, not where it takes place, so statement 1 is wrong.