MCQ Questions for Class 12 Biology Chapter 16 Environmental Issues with Answers Set-A
Environmental Issues Class 12 Biology MCQs Questions with Answers
Check the below NCERT MCQ Questions for Class 12 Biology Chapter 16 Environmental Issues with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have Provided Environmental Issues Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.
Class 12 Biology Chapter 16 Quiz
Class 12 Biology Chapter 16 MCQ Online Test
You can refer to NCERT Solutions for Class 12 Biology Chapter 16 Environmental Issues to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.
Environmental Issues Class 12 Biology MCQ online test
| Q1. | Which chemical substance affects the Ozone Layer? |
A.Chlorofluorocarbon |
|
B.Chlorine |
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C.Hexafluorocarbon |
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D.Molecular Carbon |
Ans: Chlorofluorocarbon
| Q2. | In Ozone Degradation which element acts as catalyst? |
A.Chlorine |
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B.Flurine |
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C.Oxygen |
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D.Potassium |
Ans: Chlorine
| Q3. | Ozone Layer is found in : |
A.Stratosphere |
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B.Lithosphere |
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C.Troposphere |
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D.Hemisphere |
Ans: Stratosphere
| Q4. | Acid Rain comes under which type of pollution? |
A.Water pollution |
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B.Air pollution |
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C.Soil pollution |
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D.Sound Pollution |
Ans: Soil pollution
| Q5. | Environment (Protection) Act came into force in? |
A.1986 |
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B.1989 |
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C.1992 |
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D.1993 |
Ans: 1992
| Q6. | Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with: |
A.DDT |
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B.Ammonia |
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C.CO2 |
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D.Water |
Ans: CO2
| Q7. | Chlorofluoro carbon are responsible for: |
A.Acid rain |
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B.Ozone layer depletion |
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C.Global warming |
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D.Thermal inversion |
Ans: Thermal inversion
| Q8. | Fluoride pollution mainly affect: |
A.Teeth |
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B.Kidney |
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C.Brain |
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D.Heart |
Ans: Teeth
| Q9. | Nutrient enrichment of water bodies causes: |
A.Stratification |
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B.Eutrophication |
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C.Succession |
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D.None of these |
Ans: Eutrophication
| Q10. | Increased skin cancer and high mutation rate are due to: |
A.Acid Rain |
|
B.Ozone Depletion |
|
C.CO2 Pollution |
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D.CO Pollution |
Ans: Ozone Depletion
| Q11. | Natural air pollutant are: |
A.Pollen Grains |
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B.Gases of Volcanic Eruption |
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C.Aerosol |
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D.Fluorides |
Ans: Gases of Volcanic Eruption
| Q12. | Which one of the following is not a greenhouse gas? |
A.Methane |
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B.CO2 |
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C.Chlorofluoro carbon |
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D.Hydrogen |
Ans: Hydrogen
| Q13. | Minimata disease is caused by: |
A.ByChromium |
|
B.By Cadmium |
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C.By Methyl mercury |
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D.By Radioactive elements |
Ans: By Methyl mercury
| Q14. | Bluebaby syndrome results from: |
A.Excess of TDS |
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B.Excess of DO |
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C.Excess of chloride |
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D.Methaemoglobin |
Ans: Methaemoglobin
| Q15. | A mutagenic pollutant is: |
A.Organophosphate |
|
B.Resines |
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C.Hydrocarbons |
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D.Nitrogen oxides |
Ans: Hydrocarbons
| Q16. | Pollutant which causes acid rain is: |
A.SO2 |
|
B.CO2 |
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C.CO |
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D.Hydrocarbon |
Ans: SO2
| Q17. | Rain is called acid rain, its pH is below: |
A.7 |
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B.6.5 |
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C.6 |
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D.5.6 |
Ans: 5.6
| Q18. | Common indicator organism of water pollution is: |
A.Lemna pancicostata |
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B.Eichhomia crassipes |
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C.Escherichia coli |
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D.Entamoeba histolytica |
Ans: Escherichia coli
| Q19. | Pollution of SO2 destroys: |
A.Lichen |
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B.Fungi |
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C.Algae |
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D.Fish |
Ans: Lichen
| Q20. | Permissible noise levels in a residential area at night time is: |
A.35 dB |
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B.40 dB |
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C.45 dB |
|
D.50 dB |
Ans: 45 dB
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