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: Ozone Layer →

1. Which of the following concentrations of Ozone in ambient air is considered good ?Asked in HPPSC HPAS Prelims 2018
2. व्यापक वायु में ओजोन की Ǔनम्नͧलिͨखत मात्रा में से कौनसी अच्छी मानी जाती है ?Asked in HPPSC HPAS Prelims 2018
3. The incorrect statement about Ozone is : (1) Bad Ozone is present in Troposphere. (2) Ozone is responsible for greenhouse effect in Stratosphere. (3) Ozone is destroyed by chlorofluorocarbons in atmosphere. (4) Ozone shields the surface of the earth from harmful UV-radiation from the sun.Asked in School Lecturer (Sanskrit Edu.) 2018
4. Which of the following are ecological impacts of ozone depletion? (a) Damage human immune system (b) Stunted growth of the plants (c) Rise of temperature (d) Causes cataractsAsked in MPSC CS Prelims 2021
5. The direct effect of Ozone depletion would lead to:Asked in RPSC RAS Prelims 1998
6. Result of Ozone hole isAsked in WBCS Main Paper 4 2021
7. Which rays of ultraviolet are most dangerous ?Asked in CGPSC Prelims Exam 2012
8. Which of the following protects life on earth from the harmful radiations of the Sun ?Asked in CGPSC Prelims Exam 2013
9. The ultraviolet solar radiations are largely absorbed byAsked in UPSC Geoscientist 2022
10. Direction to the following two questions (Q. Nos. 29 & 30). Read the two statements Assertion (A) & Reason (R). Choose the correct answer from the four choices (a), (b), (c) or (d) as given below : Statement-I (A) : Ozone layer protects the earth from excessive quantities of severely damaging Solar radiation. Statement-II (R) : Ozone hole has been discovered over the Continent of Antarctica.Asked in KPSC KAS Prelims 2014
11. The depletion of the ozone layer surrounding our earth increases our exposure toAsked in MPSC CS Prelims 2012
12. Ozone layer of atmosphere absorbsAsked in TNPSC CS Prelims 2017
13. Which of the following is responsible for protecting humans from harmful ultraviolet rays?Asked in TNPSC CS Prelims 2022
14. Presence of ozone in the atmosphere is important because it absorbsAsked in UPSC CAPF 2017
15. Statement-I : Ozone is essential for biotic life Statement-II : The ozone layer protects the earth's surface from high energy radiation. Select the correct answer from the code given below :Asked in UPPSC Upper Mains 2010
16. With reference to ‘ozone layer’, which of the following statements is/are correct ? 1. Ozone layer shields the surface of the earth from the ultra-violet radiations from the sun. 2. Ozone depletion has been linked to the chlorofluorocarbons. Select the correct answer from the code given below : Code : (a) Only 2 (b) Both 1 and 2 (c) Neither 1 nor 2 (d) Only 1Asked in uppsc 2025 2025
17. Ozone layer protects us from-Asked in Headmaster (Secondary School) 2018
18. Ozone Gas layer protects us from - raysAsked in Staff Nurse Examination 2023
19. Ozone layer above the earth provides a shield against - [a] X-rays - [c] Y- rays - [b] Ultraviolet rays - [d] Infrared raysAsked in Research Assistant 2014
20. Ozone layer above the earth provides a shield againstAsked in Research Assistant 2014
21. Which one of the following statements with regard to ozone is not correct?Asked in UPSC CDS 2 2020
22. Ultra-violet radiation from sun light causes the reaction that produce which of the following?Asked in UPPCS Prelims 2018
23. Ozone undergoes photolysis due to ultra- violet radiations of wavelength ______Asked in WBCS Main Paper 4 2021
24. Ozone layer is mainly made up of :-Asked in Assistant Engineer (AE) Exam 2013
25. Ozone in the upper atmosphere is produced fromAsked in Section Officer(LDCE) 2021 22 2021