OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich of the following are the key features of ‘National Ganga River Basin Authority (NGRBA)’? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWith reference to United Nation’s Sustainable Development Goals, which of the following is Goal 10? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsCBD is expanded as – CBD – Convention on Biological Diversity September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsThe database generated by ENVIS is used for the management of September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsEx situ conservation includes – Ex situ conservation – botanical gardens September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich of the following does not belong to natural air pollutant? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsBiochemical oxygen demand of water is a measure of September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsThe succession where the community increases its diversity and complexity with time is called September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsDeforestation is not a direct cause of – Deforestation is not a direct cause of September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsThe first sustainable development goal aims to eradicate extreme poverty; how does the U. N. currently measure extreme poverty? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich of the following is expected to be a cause of the rise in sea level? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich of the following is a correct combination? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhat was the theme of the World Sustainable Development Summit, 2020? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsThe use of microorganisms to degrade the harmful hazardous pollutants in the environment is called September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich is the Greenest State of India – Greenest state of India – Mizoram September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsIndia’s first-ever conservation reserve for black buck will come up in which city-state? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsIndia awarded Certificate of Commendation by CITES for its effort to combat illegal wildlife trade during 2017 for which of the following operations? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich of the following species on earth is known as “Living fossil” surviving for more than 150 billion years? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsWhich of the following is the most important greenhouse gas in the earth’s atmosphere? September 25, 2026
OPSC OAS Environment & Ecology Solved Prelims PYQs, OPSC OAS Solved Prelims PYQsThe “Montreaux Record” is a register of – Montreux Record – threatened wetlands September 25, 2026
