UPSC CSE Prelims · 2021
UPSC Prelims 2021 Environment — Solved PYQs with Answers
18 solved UPSC (IAS) Prelims 2021 Environment & Ecology previous year questions, each with the correct answer and a detailed explanation.
← All UPSC 2021 PYQs · All Environment PYQs · Environment strategy
- In nature, which of the following is/are most likely to be found surviving on a surface without soil? 1. Fern …
- Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of th…
- Which of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Sel…
- In which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of …
- Which of the following have species that can establish a symbiotic relationship with other organisms? 1. Cnida…
- With reference to the water on the planet Earth, consider the following statements: 1. The amount of water in …
- Which one of the following is used in preparing a natural mosquito repellent?
- The vegetation of savannah consists of grassland with scattered small trees, but extensive areas have no trees…
- How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages …
- In the context of India’s preparation for Climate- Smart Agriculture, consider the following statements: 1. Th…
- Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide …
- With reference to furnace oil, consider the following statements: 1. It is a product of oil refineries. 2. Som…
- Magnetite particles, suspected to cause neurodeg- enerative problems, are generated as environmental pollutant…
- The ‘Common Carbon Metric’, supported by UNEP, has been developed for
- What is blue carbon?
- Consider the following animals: 1. Hedgehog 2. Marmot 3. Pangolin To reduce the chance of being captured by pr…
- Consider the following statements: 1. Moringa (drumstick tree) is a leguminous evergreen tree. 2. The Tamarind…
- 'R2 Code of Practices' constitutes a tool available for promoting the adoption of: