MCQ Questions for Class 12 Biology Chapter 16 Environmental Issues 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 MCQ With Answers

Biology Class 12 Chapter 16 MCQs On Environmental Issues

MCQ On Environmental Issues With Answers Pdf Chapter 16 Question 1.
Which chemical substance affects the Ozone Layer?
(a) Chlorofluorocarbon
(b) Chlorine
(c) Hexafluorocarbon
(d) Molecular Carbon

Answer

Answer: (a) Chlorofluorocarbon


Environmental Issues MCQ Chapter 16 Question 2.
In Ozone Degradation which element acts as catalyst?
(a) Chlorine
(b) Flurine
(c) Oxygen
(d) Potassium

Answer

Answer: (a) Chlorine


MCQ On Environmental Issues Chapter 16 Question 3.
Ozone Layer is found in :
(a) Stratosphere
(b) Lithosphere
(c) Troposphere
(d) Hemisphere

Answer

Answer: (a) Stratosphere


Environmental Issues Class 12 MCQ Chapter 16 Question 4.
Acid Rain comes under which type of pollution?
(a) Water pollution
(b) Air pollution
(c) Soil pollution
(d) Sound Pollution

Answer

Answer: (c) Soil pollution


Acid Rain comes under which type of pollution?

MCQ On Environmental Issues Class 12 Chapter 16 Question 5.
Environment (Protection) Act came into force in?
(a) 1986
(b) 1989
(c) 1992
(d) 1993

Answer

Answer: (c) 1992


MCQs On Environmental Issues Chapter 16 Question 6.
Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with:
(a) DDT
(b) Ammonia
(c) CO2
(d) Water

Answer

Answer: (c) CO2


Environmental Issues Questions And Answers Pdf  Question 7.
Chlorofluoro carbon are responsible for:
(a) Acid rain
(b) Ozone layer depletion
(c) Global warming
(d) Thermal inversion

Answer

Answer: (d) Thermal inversion


Environmental Issues MCQ Pdf Chapter 16 Question 8.
Fluoride pollution mainly affect:
(a) Teeth
(b) Kidney
(c) Brain
(d) Heart

Answer

Answer: (a) Teeth


Environmental Issues Class 12 MCQ Pdf Question 9.
Nutrient enrichment of water bodies causes:
(a) Stratification
(b) Eutrophication
(c) Succession
(d) None of these

Answer

Answer: (b) Eutrophication


Environmental Issues MCQs Chapter 16  Question 10.
Increased skin cancer and high mutation rate are due to:
(a) Acid Rain
(b) Ozone Depletion
(c) CO2 Pollution
(d) CO Pollution

Answer

Answer: (b) Ozone Depletion


Environmental Issues MCQ Neet Chapter 16 Question 11.
Natural air pollutant are:
(a) Pollen Grains
(b) Gases of Volcanic Eruption
(c) Aerosol
(d) Fluorides

Answer

Answer: (b) Gases of Volcanic Eruption


Biology MCQs Class 12 Chapter 16 Question 12.
Which one of the following is not a greenhouse gas?
(a) Methane
(b) CO2
(c) Chlorofluoro carbon
(d) Hydrogen

Answer

Answer: (d) Hydrogen


Biology MCQ Class 12 Chapter 16 Question 13.
Minimata disease is caused by:
(a) ByChromium
(b) By Cadmium
(c) By Methyl mercury
(d) By Radioactive elements

Answer

Answer: (c) By Methyl mercury


MCQ Biology Class 12 Chapter 16 Question 14.
Bluebaby syndrome results from:
(a) Excess of TDS
(b) Excess of DO
(c) Excess of chloride
(d) Methaemoglobin

Answer

Answer: (d) Methaemoglobin


Class 12 Biology MCQ Chapter 16 Question 15.
A mutagenic pollutant is:
(a) Organophosphate
(b) Resines
(c) Hydrocarbons
(d) Nitrogen oxides

Answer

Answer: (c) Hydrocarbons


Class 12 Biology Ncert MCQ Chapter 16 Question 16.
Pollutant which causes acid rain is:
(a) SO2
(b) CO2
(c) CO
(d) Hydrocarbon

Answer

Answer: (a) SO2


Environmental Issues MCQ With Answers Chapter 16 Question 17.
Rain is called acid rain, its pH is below:
(a) 7
(b) 6.5
(c) 6
(d) 5.6

Answer

Answer: (d) 5.6


Environmental Issues Neet MCQ Chapter 16 Question 18.
Common indicator organism of water pollution is:
(a) Lemna pancicostata
(b) Eichhomia crassipes
(c) Escherichia coli
(d) Entamoeba histolytica

Answer

Answer: (c) Escherichia coli


Common indicator organism of water pollution is:

Environmental Issues Neet MCQ Pdf Chapter 16 Question 19.
Pollution of SO2 destroys:
(a) Lichen
(b) Fungi
(c) Algae
(d) Fish

Answer

Answer: (a) Lichen


Environmental Issues Neet MCQ Pdf Download Chapter 16 Question 20.
Permissible noise levels in a residential area at night time is:
(a) 35 dB
(b) 40 dB
(c) 45 dB
(d) 50 dB

Answer

Answer: (c) 45 dB


Question 21.
Act formulated in 1996 was:
(a) Insecticide Act
(b) Air (Prevention and Control of Pollution) Act
(c) Water (Prevention and control of Pollution) Act
(d) Environment protection Act

Answer

Answer: (d) Environment protection Act


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