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Q.17. Common indicator organism of water pollution is

  1. Lemna pancicostata
  2. Eichhomia crassipes
  3. Escherichia coli
  4. Entamoeba histolytica
Answer: (c) Escherichia coli
Explanation: Common indicator organism of water pollution is Escherichia coli

Environmental Issues : Biology (Class 12th) Revision Test | MCQs For NEET

25 Questions 2 Attempts 1.88K Seen
This practice/revision test includes 25 important multiple choice questions from the Class 12th Biology NCERT chapter -  Environmental Issues.  Start Test without Login in
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Q.1. Which chemical substance affects the Ozone Layer?

  1. Chlorofluorocarbon
  2. Chlorine
  3. Hexafluorocarbon
  4. Molecular Carbon

Q.2. In Ozone Degradation which element acts as catalyst?

  1. Chlorine
  2. Flurine
  3. Oxygen
  4. Potassium

Q.3. Ozone Layer is found in

  1. Stratosphere
  2. Lithosphere
  3. Troposphere
  4. Hemisphere

Q.4. Acid Rain comes under which type of pollution?

  1. Water pollution
  2. Air pollution
  3. Soil pollution
  4. Sound Pollution

Q.5. Environment (Protection) Act came into force in?

  1. 1986
  2. 1989
  3. 1992
  4. 1993

Q.6. Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with

  1. DDT
  2. Ammonia
  3. CO2
  4. Water

Q.7. Chlorofluoro carbon are responsible for

  1. Acid rain
  2. Ozone layer depletion
  3. Global warming
  4. Thermal inversion

Q.8. Fluoride pollution mainly affect

  1. Teeth
  2. Kidney
  3. Brain
  4. Heart

Q.9. Nutrient enrichment of water bodies causes

  1. Stratification
  2. Eutrophication
  3. Succession
  4. None of these

Q.10. Increased skin cancer and high mutation rate are due to

  1. Acid Rain
  2. Ozone Depletion
  3. CO2 Pollution
  4. CO Pollution

Q.11. Natural air pollutant are

  1. Pollen Grains
  2. Gases of Volcanic Eruption
  3. Aerosol
  4. Fluorides

Q.12. Which one of the following is not a greenhouse gas?

  1. Methane
  2. CO2
  3. Chlorofluoro carbon
  4. Hydrogen

Q.13. Minimata disease is caused by

  1. ByChromium
  2. By Cadmium
  3. By Methyl mercury
  4. By Radioactive elements

Q.14. Bluebaby syndrome results from

  1. Excess of TDS
  2. Excess of DO
  3. Excess of chloride
  4. Methaemoglobin

Q.15. A mutagenic pollutant is:

  1. Organophosphate
  2. Resines
  3. Hydrocarbons
  4. Nitrogen oxides

Q.16. Rain is called acid rain, its pH is below:

  1. 7
  2. 6.5
  3. 6
  4. 5.6

Q.17. Common indicator organism of water pollution is

  1. Lemna pancicostata
  2. Eichhomia crassipes
  3. Escherichia coli
  4. Entamoeba histolytica

Q.18. Pollution of SO2 destroys

  1. Lichen
  2. Fungi
  3. Algae
  4. Fish

Q.19. Act formulated in 1996 was

  1. Insecticide Act
  2. Air (Prevention and Control of Pollution) Act
  3. Water (Prevention and control of Pollution) Act
  4. Environment protection Act

Q.20. Permissible noise levels in a residential area at night time is

  1. 35 dB
  2. 40 dB
  3. 45 dB
  4. 50 dB

Q.21. The natural aging of the lake is called

  1. Biomagnification
  2. Eutrophication
  3. BOD
  4. None of the above

Q.22. The agents that bring undesirable changes in the environment arc called

  1. Pollution
  2. Fragments
  3. Pollutants
  4. None of the above

Q.23. Particulate matter can be removed by

  1. Catalytic converter
  2. Converter
  3. Radioactive converter
  4. Electrostatic converter

Q.24. The petrol used in engines filled with catalytic converter should be

  1. Simple petrol
  2. Any type of petrol
  3. Unleaded petrol
  4. None of the above

Q.25. Which metal inactivates a catalytic converter?

  1. Gold
  2. Iron
  3. Silvers
  4. Lead
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