इस परिच्छेद से, निम्नलिखित में से कौन-सा/से सही निष्कर्ष (इंफेरेंस) निकाला जा सकता है/निकाले जा सकते हैं?
- 1.वनोन्मूलन के कारण नदियों के मार्ग में परिवर्तन हो सकता है।
- 2.भूमि का लवणीभवन केवल मानवीय क्रियाकलाप के कारण होता है।
- 3.मैदानों में गहन एकधान्य कृषि-प्रथा, उष्णकटिबंधीय एशिया, अफ्रीका और दक्षिण अमेरिका में मरुभवन का प्रमुख कारण है।
नीचे दिए गए कूट का प्रयोग कर सही उत्तर चुनिए।
Read this question in English
Which of the following is/are the correct inference/inferences that can be made from the passage?
1. Deforestation can cause changes in the course of rivers.
2. Salinization of land takes place due to human activities only.
3. Intense monoculture practice in plains is a major reason for desertification in Tropical Asia, Africa and South America.
Select the correct answer using the code given below.
(a) 1 only · (b) 1 and 2 only · (c) 2 and 3 only · (d) None of the above is a correct inference
उत्तर और व्याख्या · explanation in English
Answer: (a) केवल 1
The Brahmaputra example links deforestation-driven erosion and siltation to 'the changing course of the river system', so statement 1 follows. Statement 2 adds 'only', and statement 3 carries the monoculture of the Indian plains over to other continents — neither is in the passage.
- ✓ 1. Deforestation causes erosive losses and siltation, and the passage ties 'siltation and the changing course of the river system' together in the Brahmaputra example.
- ✗ 2. Salinization in 'green revolution' areas is one example of impoverishment of human-impacted ecosystems; the passage never says human activity is its only cause.
- ✗ 3. Rice/wheat monoculture is mentioned for 'the Indian plains'; the high erosion in Tropical Asia, Africa and South America is linked to deforestation and ill-suited land management.
Remember · Reject inferences that add absolute words ('only') or move an example from one place to a different region.
Question and answer: UPSC's official GS Paper II (2018, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·