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: Pollution →

1. Which city has issued a red alert for air pollution for the first time ever on December, 2015 with a heavy cloud of dangerous smog blanketing the city?Asked in APSC CCE Prelims Exam 2016
2. Which among the following types is a non- material pollution?Asked in APSC CCE Prelims Exam 2020
3. What is Particulate matter ?Asked in BPSC Prelims Exam 60 62rd
4. Match List-I with List-II and select the correct answer using the codes given below the lists : List-I List-II a. Skin Cancer 1. Chlorofluorocarbons b. Noise Pollution 2. Ultraviolet light c. Global Warming 3. Decibel d. Ozone Hole 4. Carbon dioxide Codes :Asked in BPSC Prelims Exam 60 62rd
5. Which of the following is present in maximum amount in acid rain ?Asked in BPSC Prelims Exam 60 62rd
6. The incomplete burning of petrol and diesel producesAsked in BPSC Prelims Exam 66th
7. Which of the following statements is / are correct ? 1. Acid rain reacts with buildings made from limestone 2. Burning of sulphur containing coal can contribute to acid rain 3. Eutrophication is an effective measure to control pollution Select the correct answer using the code given below :Asked in UPSC CDS 1 2016
8. Which one of the following is the main reason of acid rains ?Asked in UPSC CDS 1 2022
9. Which one of the following is the most important factor for the formulation of smog?Asked in UPSC CDS 1 2022
10. Which one of the following air pollutants combines with the haemoglobin of human blood and reduces its oxygen-carrying capacity, leading to suffocation and may cause even death?Asked in UPSC CDS 2 2016
11. Which one of the following is not included in the National Air Quality Index?Asked in UPSC CDS 2 2017
12. 'Acid rain' consists of the following :Asked in CGPSC Prelims Exam 2020
13. Which of the following particulate matters (size based) are notified pollutants in National Ambient Air Quality Standards (NAAQS)?Asked in UPSC Geoscientist 2020
14. Which of the following major parameters are considered while deriving the Air Quality Index (AQI) of an area in India?Asked in UPSC Geoscientist 2022
15. Which of the following statements about Photochemical Smog is/are correct ? 1. It irritates the eyes. 2. It leads to cracking of rubber. 3. It causes considerable damage to plant life. Select the answer using the code given below :Asked in UPSC Geoscientist 2024
16. Bharat Stage emission standards are applicable to ______. 1. Transport Vehicles 2. Small Scale Industries 3. Power PlantsAsked in GPSC Prelims CSP 2 2019
17. Which of the following statements are correct regarding National Air Quality Index? 1. This Index was launched in the year 2014 under Swatchh Bharat Abhiyan. 2. It is outlined as One Number- One Colour- One Description. 3. The current measurement index is based on 12 pollutants. 4. Air Quality Range index ranging between 401-500 is considered as severe impact.Asked in GPSC Prelims CSP 2 2021
18. Around ______ people lost lives in Delhi last year due to PM 2.5 air pollution according to a recent report of Greenpeace Southeast Asia?Asked in GPSC Prelims CSP 2 2021
19. Persistent haze that extends from about November to April, covers Arabian Sea, Bay of Bengal and South Asian region is related with __________.Asked in GPSC Prelims CSP 2 2022
20. Which of the following pollutants are present in the motor vehicle exhaust emissions? 1. Suspended particulate matter 2. Nitrogen oxides 3. Hydrocarbons 4. Carbon MonoxideAsked in GPSC Prelims CSP 2 2022
21. Which of the following statement(s) is/are correct regarding newly announced Global Air Quality Guidelines by World Health Organization? 1. The new Air Quality Guidelines threshold was set for six key air pollutants 2. The six pollutants are Particulate Matter (PM 2.5 and PM10), Ozone, Nitrogen Dioxide, Sulphur Dioxide and Carbon Monoxide. 3. Bangladesh, Pakistan and India have recorded the highest air pollution levels with regard to 2005 WHO guidelines.Asked in GPSC Prelims CSP 2 2022
22. Which of the following is called the secondary air pollutant?Asked in GPSC Prelims CSP 2 2023
23. Select the names of adsorbents used for the removal of various gaseous air pollutants: 1. Iron oxide 2. Silica gel 3. Activated carbon 4. Water Select the correct answer using the code given below:Asked in GPSC Prelims CSP 2 2023
24. Some reliable indicators of pollution are :Asked in HPPSC HPAS Prelims 2010
25. Fly ash is environment pollutant produced by :Asked in HPPSC HPAS Prelims 2011