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Botany - Environmental Issues

Practise 41 AIIMS previous year questions on Environmental Issues, compiled from papers spanning 2002 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AIIMS tests.

Environmental Issues has been asked in 17 of the 19 years of AIIMS papers analysed (2001–2019), with 41 questions in all. 49% of them were easy, 34% moderate and 17% tough. Most of its questions came from 2011, with 4 questions that year. In the last three years (2017–2019) it had 5 questions across 5 papers, about 1 per paper.

All of the chapter's questions come from a single topic, Pollution.

  1. 1Which gases are responsible for increasing the temperature of atmosphere?26 May, 2019Pollution
  2. 2Assertion : Mercury vapour emitting out from scrubber does not pollute environment. Reason : Scrubber cannot trap mercury vapour.26 May, 2019Pollution
  3. 3Assertion : Deforestation sequesters from atmosphere. Reason : Global warming is beneficial for plants and human health.27 May, 2018Pollution
  4. 4Which one of the following options correctly designate the percent contribution of gases (A, and D) responsible for global warming?26 May, 2018Pollution
  5. 5Assertion: Pollution is always caused by human activities. Reason: Pollution is not different from contamination.26 May, 2018Pollution
  6. 6One greenhouse gas contributes to total global warming and another contributes . These are respectively identified as2016Pollution
  7. 7Match the following and select the correct option.2015Pollution
  8. 8Assertion : BOD of a river polluted by sewage is more than . Reason : Polluted river contains excess of organic matter.2015Pollution
  9. 9Assertion : Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae. Reason : It is due to biomagni2015Pollution
  10. 10Photochemical smog formed in congested metropolitan cities mainly consists of2014Pollution
  11. 11Assertion : Secondary air pollutants are formed by interaction among the primary pollutants and are more toxic. Reason: DDT is a secondary a2014Pollution
  12. 12Which of the following is not an invasive species?2013Pollution
  13. 13A large quantity of urban sewage is drained to nearby village river. Which among the given conditions would happen after mixing of sewage in2013Pollution
  14. 14Which of the following is a secondary pollutant?2013Pollution
  15. 15Cattle ranches are known to causes acute green house effect. This is due to2012Pollution
  16. 16Select the correct statement.2012Pollution
  17. 17In vehicles, catalytic converters are used2011Pollution
  18. 18Which of the following statements is correct?2011Pollution
  19. 19Assertion : Amount of organic biodegradable compounds present in water is measured by the BOD of that water. Reason : During biodegradation 2011Pollution
  20. 20Assertion : Algal blooms are formed in nutrientless water. Reason : Algal blooms in water turn it unfit for human consumption, but cause eno2011Pollution
  21. 21Assertion : Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae. Reason : It is due to biomagni2010Pollution
  22. 22Rain is called acid-rain when its is below2009Pollution
  23. 23The first bioherbicide developed in 1981 was based on2009Pollution
  24. 24Assertion : Excess of nitrates in drinking water are harmful for infants. Reason : Nitrates are responsible for blue baby syndrome.2009Pollution
  25. 25A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this?2008Pollution
  26. 26Assertion : Dimethyl mercury is a highly persistent pollutant that accumulates in food chains. Reason : Mercury pollution is responsible for2008Pollution
  27. 27Assertion : Pollution is always caused by human activities. Reason : Pollution is not different from contamination.2007Pollution
  28. 28Assertion : Chlorofluorocarbons are responsible for ozone depletion. Reason : Ozone level decreases by as much as \(67 \%\) every year.2007Pollution
  29. 29The Montreal Protocol refers to2006Pollution
  30. 30Assertion : The concentration of methane in the atmosphere has more than doubled in the last 250 years. Reason : Wetlands and rice fields ar2006Pollution
  31. 31Which one of the following statement pertaining to pollutants is correct?2005Pollution
  32. 32Assertion : A suspended particulate matter (SPM) is an important pollutant released by diesel vehicles. Reason : Catalytic converters greatl2005Pollution
  33. 33Assertion : Presently, the global atmosphere is warming up. Reason : The depletion of stratospheric ozone layer has resulted in increase in 2005Pollution
  34. 34Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to2004Pollution
  35. 35Minamata disease was caused due to the consumption of2004Pollution
  36. 36Assertion : Agricultural output increased several times after introduction of DDT. Reason : DDT was the first insecticide used on a wide sca2004Pollution
  37. 37Drinking of mineral water with very low level of pesticides (about ) for long periods may:2003Pollution
  38. 38In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/are:2003Pollution
  39. 39Assertion : Organochlorine pesticides are organic compounds that have been chlorinated. Reason : Fenitrothion is one of the organochlorine p2003Pollution
  40. 40Assertion : Inhabitants close to very busy airports are likely to experience health hazards. Reason : Sound level of jet aeroplanes usually 2003Pollution
  41. 41Green muffler is used against which type of pollution ?2002Pollution

Frequently Asked Questions

1.How many questions are available for Environmental Issues?

This chapter includes 41 questions compiled from AIIMS papers spanning 2002 to 2019.

2.Are these questions only from AIIMS, or from other exams too?

These are AIIMS questions specifically for the Environmental Issues chapter. Questions from other exams like NEET or JIPMER are organised separately under their respective exam sections.

3.Is Environmental Issues an important chapter for AIIMS Botany?

Environmental Issues has appeared in 17 of the 19 years of AIIMS papers covered here, with 41 questions across 18 papers - about 2 per paper it appears in.

4.What is the difficulty level of Environmental Issues questions in AIIMS?

Of the 41 questions analysed for this chapter, 49% are easy, 34% moderate and 17% tough. 2011 had the most, with 4 questions.

5.Which topics in Environmental Issues should I focus on?

All of this chapter's questions come from a single topic: Pollution.

6.Is Environmental Issues's weightage in AIIMS going up or down?

Across all 18 papers analysed, Environmental Issues has averaged about 2.3 questions per paper. In the last three years (2017–2019), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.