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Biology - Environmental Issues

Practise 21 MHT-CET (PCB) previous year questions on Environmental Issues, compiled from papers in 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty MHT-CET (PCB) tests.

Environmental Issues has been asked in 1 of the 1 years of MHT-CET (PCB) papers analysed (2026), with 21 questions in all. 62% of them were easy, 38% moderate and 0% tough. Most of its questions came from 2026, with 21 questions that year. In 2026 it had 21 questions across 11 papers, about 1.9 per paper.

The chapter's 2 topics are not weighted equally: Pollution (20 questions, 95%) and Water Pollution (1 question, 5%) have been asked the most.

  1. 1According to Central Pollution Control Board (CPCB), particulate matter of which size is responsible for causing the greatest harm to humans26 Apr, 2026 (M)Pollution
  2. 2Which of the following is NOT the source of methane released to atmosphere?26 Apr, 2026 (M)Pollution
  3. 3Which one among the following is NOT a reason for increase in concentration of carbon dioxide in the atmosphere?25 Apr, 2026 (E)Pollution
  4. 4With which the Montreal protocol is concerned?25 Apr, 2026 (E)Pollution
  5. 5In which part of India, the Jhum cultivation is followed?25 Apr, 2026 (E)Pollution
  6. 6The water hyacinth ( Eichhornia crassipes ) is a native of ______.24 Apr, 2026 (M)Pollution
  7. 7Which one of the following is also known as 'Terror of Bengal'?24 Apr, 2026 (M)Pollution
  8. 8Which of the following is a reason for the break down of chemical bonds within molecules such as DNA of living organisms causing injuries?24 Apr, 2026 (E)Pollution
  9. 9Match the Pollutants in Column-I with their effects in Column-II and choose the correct option: Column I Column-II (A) UV B rays (I) Biomagn24 Apr, 2026 (E)Water Pollution
  10. 10A college student standing near a traffic signal in a metropolitan city like Delhi suddenly felt dizzy and fainted. What might be the possib24 Apr, 2026 (E)Pollution
  11. 11According to Central Pollution Control Board, which particulate matter size in diameter (in micrometers) are responsible for causing the gre23 Apr, 2026 (M)Pollution
  12. 12Eutrophication is due to overgrowth of -------------- at the instance of high phosphorus dissolved in water.23 Apr, 2026 (M)Pollution
  13. 13Which of the following is NOT an example of particulate pollutant?23 Apr, 2026 (E)Pollution
  14. 14In 2001, Bharat stage II emission norms were set for CNG and LPG vehicles. It stipulates that emission of sulphur be controlled at ppm in Di23 Apr, 2026 (E)Pollution
  15. 15A jet plane on a single trip across the Atlantic uses ____ tonnes of oxygen and releases ____ tonnes of CO .22 Apr, 2026 (M)Pollution
  16. 16In the human eye, snow blindness is caused by ____ radiations of ______ wavelength.22 Apr, 2026 (M)Pollution
  17. 17Which among the following pairs of gases is the major cause of the 'green house effect'?22 Apr, 2026 (E)Pollution
  18. 18The sound levels above ____ decibels may damage our ear drums.22 Apr, 2026 (E)Pollution
  19. 19Which equipment is most widely used for removing particulate matter present in industrial exhaust ?21 Apr, 2026 (M)Pollution
  20. 20The Montreal Protocol was signed at Montreal in 1987 to control -----------------------------.21 Apr, 2026 (M)Pollution
  21. 21Algal bloom is caused due to21 Apr, 2026 (E)Pollution

Frequently Asked Questions

1.How many questions are available for Environmental Issues?

This chapter includes 21 questions compiled from MHT-CET (PCB) papers in 2026.

2.Are these questions only from MHT-CET (PCB), or from other exams too?

These are MHT-CET (PCB) questions specifically for the Environmental Issues chapter. Questions from other exams like NEET or AIIMS are organised separately under their respective exam sections.

3.Is Environmental Issues an important chapter for MHT-CET (PCB) Biology?

Environmental Issues has appeared in 1 of the 1 year of MHT-CET (PCB) papers covered here, with 21 questions across 10 papers - about 2 per paper it appears in.

4.What is the difficulty level of Environmental Issues questions in MHT-CET (PCB)?

Of the 21 questions analysed for this chapter, 62% are easy, 38% moderate and 0% tough. 2026 had the most, with 21 questions.

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

These topics have carried the most weightage in Environmental Issues:

  • Pollution - 20 questions (95%)
  • Water Pollution - 1 question (5%)
6.Is Environmental Issues's weightage in MHT-CET (PCB) going up or down?

Across all 10 papers analysed, Environmental Issues has averaged about 2.1 questions per paper. In 2026, that average has stayed about the same, at about 1.9 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.