Environment and Ecology
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Environment and Ecology questions with answers

2,222 multiple-choice questions. Open any question for its answer and explanation.

Questions asked in State PSC and UPSC prelims, by topic. Each topic also has notes to read.

Read the notes: Greenhouse Effect and Climate Change →

  1. Which one of the following statements best describes the 'carbon price'?Asked in UPSC CAPF 2010
  2. Which of the following statements about CBAM (Carbon Border Adjust-ment Mechanisms) is/are correct ? 1. These are an emerging set of trade tools to allow movement of carbon-intensive economic activity from a jurisdiction having less stringent climate policy to a jurisdiction having stringent climate policy. 2. These are meant to increase the environmental effectiveness of climate policies Select the answer using the code given below :Asked in UPSC CAPF 2024
  3. In the context of mitigating the impending global warming due to anthropogenic carbon dioxide, which of the following can be the potential sites for carbon sequestration ? 1. Abandoned and uneconomic coal seams 2. Depleted oil and gas reservoirs 3. Subterranean deep saline formations Select the correct answer using the code given belowAsked in UPSC IAS 2017
  4. Which one of the following statements best describes the term 'Social Cost of Carbon'? It is a measure, in monetary value, of theAsked in UPSC IAS 2020
  5. What is blue carbon?Asked in UPSC IAS 2021
  6. The 'Common Carbon Metric', supported by UNEP, has been developed forAsked in UPSC IAS 2021
  7. Consider the following activities: 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasing the alkalinity of oceans by adding lime 3. Capturing carbon dioxide released by various industries and pumping it into abandoned subterranean mines in the form of carbonated waters How many of the above activities are often considered and discussed for carbon capture and sequestration?Asked in UPSC IAS 2023
  8. Which one of the following statements regarding the Emission Reduction Purchase Agreement signed with the World Bank in May 2011 is not correct ?Asked in UPPSC Upper Mains 2010
  9. Which of the following is the largest sink for carbon dioxide gas?Asked in WBCS Main Paper 4 2019
  10. One Carbon credit is accepted equivalent to - dioxide dioxideAsked in Asst. Engineer Comb. Comp. Exam 2018
  11. Which of the following is the correct statement regarding 'carbon footprint' in the context of global warming?Asked in ARO GS 252022 74 2024
  12. In the context of global climate, 'carbon trading' refers to which of the following? (A) Buying and selling of carbon-based products using an international protocol (B) Buying and selling of credits that allow an entity to emit a certain amount of greenhouse gases into the atmosphere (C) Transferring a certain amount of carbon reserve to another country (D) Inventory of carbon emitting products in a countryAsked in ARO GS 252022 74 2024
  13. As per Kyoto Protocol on Climate Change, 1997, a new concept has been developed from 2002 in regards to reducing carbon in the atmosphere for the industrially developed nations. What is this concept?Asked in Asst Mana APDCL GS 06 2023
  14. Which city has the highest carbon footprint in the country?Asked in Assistant Programmer 2021
  15. Which one of the following is not a good carbon sink?Asked in GS Asst Architect PWD 02 2025
  16. To prevent a 2°C rise in global temperature, the average global carbon footprint needs to drop to 2 tonnes per person by 2025. Consider the following statements on carbon footprint : - (i) Carbon footprint is the total amount of greenhouse gas (excluding carbon dioxide and methane) generated by our action. - (ii) The rising heat wave will make it impossible to reduce carbon footprint. - (iii) The average carbon footprint per person in the USA is 16 tonnes. The global average is 4 tonnes. - (iv) Countrywise, India is the third largest emitter of greenhouse gas. Choose the correct option from the codes given below.Asked in GS Asst Architect PWD 02 2025
  17. Consider the following statements regarding net-zero emission. Net-zero emission means country would bring down its greenhouse gas emissions to near zero. Countries are setting their Net-zero emission goal based on the 2015 Paris Agreement guidelines. Net-zero emission can be achieved by creating more carbon sinks such as forests and relying on futuristic technologies such as carbon capture and storage. Which of the above statement/s is/are correct?Asked in GPSC Prelims CSP 2 2024
  18. According to Kigali Amendment of 2016, the world can avoid up to ______ of global warming by the end of the century.Asked in GPSC Prelims CSP 2 2017
  19. Recently 'Decarbonising Transport in India' project was launched by NITI Aayog in collaboration with International Transport Forum (ITF). Identify the incorrect statement.Asked in PPSC CS Prelims 2021
  20. The United Nations Environment Programme and International Energy Agency jointly released a 'Cooling Emissions and Policy Synthesis Report' (CEPSR). Which of the following statements is/are correct about the report ?Asked in PPSC CS Prelims 2021
  21. With reference to 'NET-ZERO' goal for 2050, which of the following statements is/are correct? 1. It means that a country will bring down its emissions to zero by 2050. 2. It means that a country's emissions will be compensated by absorption and removal of green house gases from the atmosphere. Select the correct answer using the codes given below:Asked in UPPCS Prelims 2021
  22. Consider the following statements regarding ‘Earth Hour’ : 1. It is an initiative of UNEP and UN‐ ESCO. 2. It is a movement in which the participants switch off the lights for one hour on a certain day every year. 3. It is a movement to raise the awareness about the climate change and the need to save the planet. Which of the statements given above is/are correct?Asked in UPSC IAS 2014
  23. With reference to 'Forest Carbon Partnership Facility', which of the following statements is/are correct? 1. It is a global partnership of governments, businesses, civil society and indigenous peoples. 2. It provides financial aid to universities, individual scientists and institutions involved in scientific forestry research to develop eco-friendly and climate adaptation technologies for sustainable forest management. 3. It assists the countries in their 'REDD+ (Reducing Emissions from Deforestation and Forest Degradation+)' efforts by providing them with financial and technical assistance. Select the correct answer using the code given below.Asked in UPSC IAS 2015
  24. In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?Asked in UPSC IAS 2019
  25. Scientist of Manchester University have recently suggested formation of brightened clouds over Pacific by geo engineering to prevent further increase in global warming. What is sprayed in the atmosphere to achieve this ?Asked in UPPSC Upper Mains 2009