Question 1.
Which chemical substance affects the Ozone Layer?
(a) Chlorofluorocarbon
(b) Chlorine
(c) Hexafluorocarbon
(d) Molecular Carbon

Answer

Answer: (a) Chlorofluorocarbon

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

Answer

Answer: (a) Chlorine

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Question 3.
Ozone Layer is found in :
(a) Stratosphere
(b) Lithosphere
(c) Troposphere
(d) Hemisphere

Answer

Answer: (a) Stratosphere

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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

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Question 5.
Environment (Protection) Act came into force in?
(a) 1986
(b) 1989
(c) 1992
(d) 1993

Answer

Answer: (c) 1992

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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

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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

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Question 8.
Fluoride pollution mainly affect:
(a) Teeth
(b) Kidney
(c) Brain
(d) Heart

Answer

Answer: (a) Teeth

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Question 9.
Nutrient enrichment of water bodies causes:
(a) Stratification
(b) Eutrophication
(c) Succession
(d) None of these

Answer

Answer: (b) Eutrophication

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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

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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

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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

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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

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Question 14.
Bluebaby syndrome results from:
(a) Excess of TDS
(b) Excess of DO
(c) Excess of chloride
(d) Methaemoglobin

Answer

Answer: (d) Methaemoglobin

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Question 15.
A mutagenic pollutant is:
(a) Organophosphate
(b) Resines
(c) Hydrocarbons
(d) Nitrogen oxides

Answer

Answer: (c) Hydrocarbons

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Question 16.
Pollutant which causes acid rain is:
(a) SO₂
(b) CO₂
(c) CO
(d) Hydrocarbon

Answer

Answer: (a) SO₂

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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

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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

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Question 19.
Pollution of SO₂ destroys:
(a) Lichen
(b) Fungi
(c) Algae
(d) Fish

Answer

Answer: (a) Lichen

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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

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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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