SCERT D. El. Ed 2026 - Environmental Science (EVS)

SCERT D. El. Ed 2026 – Environmental Science

SCERT D. El. Ed 2026 – Environmental Science

Environmental Studies (EVS) – Part 2

Q1. Which gas released from burning coal and oil is a major cause of acid rain?
  • A. Oxygen
  • B. Sulphur dioxide
  • C. Hydrogen
  • D. Helium
Correct Answer: B. Sulphur dioxide
Q2. Which type of pollution is measured on the decibel (dB) scale?
  • A. Air pollution
  • B. Water pollution
  • C. Noise pollution
  • D. Soil pollution
Correct Answer: C. Noise pollution
Q3. Above what decibel level can sound cause immediate hearing damage?
  • A. 50 dB
  • B. 85 dB
  • C. 130 dB
  • D. 200 dB
Correct Answer: C. 130 dB
Q4. Eutrophication of water bodies is mainly caused by excess of:
  • A. Salt and chlorine
  • B. Nitrogen and phosphorus
  • C. Iron and zinc
  • D. Sand and silt
Correct Answer: B. Nitrogen and phosphorus
Q5. Cholera, typhoid and dysentery are commonly spread through:
  • A. Contaminated drinking water
  • B. Sound waves
  • C. Loud noise
  • D. Solar radiation
Correct Answer: A. Contaminated drinking water
Q6. Which of the following is a major source of air pollution?
  • A. Tree plantation
  • B. Burning of fossil fuels
  • C. Rainfall
  • D. River flow
Correct Answer: B. Burning of fossil fuels
Q7. Particulate matter (PM) in polluted air mainly affects which body system?
  • A. Digestive system
  • B. Respiratory system
  • C. Skeletal system
  • D. Reproductive system
Correct Answer: B. Respiratory system
Q8. Soil pollution can result from excessive use of:
  • A. Compost
  • B. Chemical pesticides and fertilisers
  • C. Earthworms
  • D. Organic mulch
Correct Answer: B. Chemical pesticides and fertilisers
Q9. Which gas produced in high-temperature combustion contributes to acid rain and smog?
  • A. Carbon dioxide
  • B. Nitrogen oxides
  • C. Helium
  • D. Argon
Correct Answer: B. Nitrogen oxides
Q10. Acid rain mainly damages which of the following?
  • A. Plastic objects
  • B. Forests and aquatic ecosystems
  • C. Glass windows
  • D. Stainless steel
Correct Answer: B. Forests and aquatic ecosystems
Q11. Industrial effluents and untreated sewage are major causes of:
  • A. Air pollution only
  • B. Water pollution
  • C. Light pollution
  • D. Sound pollution
Correct Answer: B. Water pollution
Q12. Environmental degradation refers to:
  • A. Improvement of natural environment
  • B. Deterioration of the natural environment
  • C. Increase in biodiversity
  • D. Restoration of forests
Correct Answer: B. Deterioration of the natural environment
Q13. Variation of genes within a single species is known as:
  • A. Species diversity
  • B. Ecosystem diversity
  • C. Genetic diversity
  • D. Habitat diversity
Correct Answer: C. Genetic diversity
Q14. Kaziranga National Park is famous for which animal?
  • A. Asiatic lion
  • B. One-horned rhinoceros
  • C. Snow leopard
  • D. Indian elephant
Correct Answer: B. One-horned rhinoceros
Q15. In which year was Kaziranga National Park inscribed as a UNESCO World Heritage Site?
  • A. 1972
  • B. 1985
  • C. 1992
  • D. 2005
Correct Answer: B. 1985
Q16. Manas National Park in Assam is a critical habitat of which endangered primate?
  • A. Hoolock gibbon
  • B. Golden langur
  • C. Lion-tailed macaque
  • D. Capped langur
Correct Answer: B. Golden langur
Q17. Dibru-Saikhowa National Park is known for its population of:
  • A. Asiatic lions
  • B. Feral horses
  • C. Snow leopards
  • D. Wild ass
Correct Answer: B. Feral horses
Q18. Conservation of species in their natural habitat is called:
  • A. Ex-situ conservation
  • B. In-situ conservation
  • C. Cryopreservation
  • D. Captive breeding
Correct Answer: B. In-situ conservation
Q19. Conservation of species outside their natural habitat (e.g., in zoos and seed banks) is called:
  • A. In-situ conservation
  • B. Ex-situ conservation
  • C. Wild conservation
  • D. Reserve conservation
Correct Answer: B. Ex-situ conservation
Q20. Under which Act of India are national parks and sanctuaries established?
  • A. Forest Conservation Act, 1980
  • B. Wildlife Protection Act, 1972
  • C. Environment Protection Act, 1986
  • D. Air Act, 1981
Correct Answer: B. Wildlife Protection Act, 1972
Q21. How many recognised megadiverse countries are there in the world?
  • A. 7
  • B. 12
  • C. 17
  • D. 25
Correct Answer: C. 17
Q22. The northeastern Indian states fall under which biodiversity hotspot?
  • A. Western Ghats
  • B. Indo-Burma
  • C. Sundaland
  • D. Mediterranean
Correct Answer: B. Indo-Burma
Q23. Which level of biodiversity refers to the variety of habitats and ecological communities in a region?
  • A. Genetic diversity
  • B. Species diversity
  • C. Ecosystem diversity
  • D. Population diversity
Correct Answer: C. Ecosystem diversity
Q24. Which protected area allows the highest level of legal protection in India?
  • A. National park
  • B. Wildlife sanctuary
  • C. Biosphere reserve
  • D. Reserved forest
Correct Answer: A. National park
Q25. Which is NOT a major threat to biodiversity?
  • A. Habitat destruction
  • B. Climate change
  • C. Tree planting
  • D. Invasive alien species
Correct Answer: C. Tree planting

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