Free Atmospheric Pollution MCQs with Answers
36 Atmospheric Pollution MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Atmospheric pollution covers harmful gases and particles released by vehicles, industries, burning fuels and natural sources. It includes carbon monoxide, sulfur and nitrogen oxides, particulate matter, smog, acid rain, the greenhouse effect and ozone depletion, along with their causes, chemical reactions, environmental effects and control methods.
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- A. Refrigeration
- B. Aerosol spray
- C. Plastic foam industry
- D. All of above
Explanation: Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine.
Correct answer: Aerosol spray- A. CH4 and O2
- B. CO2 and H2O Vapours
- C. NO2 and H2O Vapours
- D. CH4 and O3
Explanation: This is correct as it includes both carbon dioxide (CO2) and water vapor (H2O), which are major greenhouse gases contributing to the…
Correct answer: CO2 and H2O Vapours- A. Sulphur dioxide
- B. Carbon monoxide
- C. Carbon dioxide
- D. Nitrogen dioxide
Explanation: Among sulfur dioxide (SO2), carbon monoxide (CO), carbon dioxide (CO2), and nitrogen dioxide (NO2), carbon dioxide (CO2) is not typically…
Correct answer: Carbon dioxide- A. Eyes
- B. Nose
- C. Stomach
- D. Skin
Explanation: Nose is correct because Peroxyacetyl Nitrate (PAN) primarily affects the respiratory system, causing irritation to the nose, throat, and…
Correct answer: Nose- A. Ultraviolet radiation from sun causes a reaction that produces ozone
- B. Ozone hole is depletion in total amount of O
- C. A single chlorine free radical can destroy 10000 ozone molecules
- D. AII of above
Explanation: Ultraviolet radiations cause photochemical splitting of oxygen molecules in the stratosphere.
Correct answer: Ultraviolet radiation from sun causes a reaction that produces ozone- A. N2
- B. N2O
- C. NO
- D. CO
Explanation: Nitrogen is an inert gas - meaning it doesn't chemically react with other gases - and it isn't toxic
Correct answer: N2- A. Smog
- B. Ozone
- C. Carbonic acid
- D. Chlorofluorocarbons
Explanation: CO2+H2O->H2CO3 This is how carbonic acid is formed from water.
Correct answer: Carbonic acid- A. Petroleum
- B. Natural gas
- C. Automobiles
- D. Human beings
Explanation: There are many sources of unburned hydrocarbons. Unburned hydrocarbons (UHC) are typically an output of incomplete combustion due to…
Correct answer: Automobiles- A. 1 - 3 %
- B. 2 - 5 %
- C. 1 - 9 %
- D. 3 - 8 %
Explanation: Organic sulfur is chemically bonded to the carbon atoms in the coal. The organic sulfur content of most coals ranges from 0.5% to about 2%.
Correct answer: 1 - 3 %- A. N2
- B. CO2
- C. O2
- D. He
Explanation: The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air.
Correct answer: N2- A. Fast decomposition of organic matter
- B. Decomposition of plants
- C. Decomposition of animals
- D. Biochemical decomposition of dead organic matter
Explanation: Fossil energy sources, including oil, coal and natural gas, are non-renewable resources that formed when prehistoric plants and animals…
Correct answer: Biochemical decomposition of dead organic matter- A. Nitrogen dioxide
- B. Dinitrogen trioxide
- C. Nitrous oxide
- D. Nitric oxide
Explanation: Explanation:The yellowish color of photochemical smog is primarily due to the presence of nitrogen dioxide (NO2), which is a…
Correct answer: Nitrogen dioxide- A. One half
- B. Not affected
- C. One third
- D. Two third
Explanation: Explanation:The incarnation process can reduce the volume of the water by two third. These options are also incorrect.
Correct answer: Two third- A. Below 5
- B. 7
- C. Between 5 and 7
- D. Between 7 and 14
Explanation: It results from high levels of atmospheric nitric and sulfuric acids that get washed down to earth.
Correct answer: Below 515. Ozone is a layer of atmosphere extending from _ km above Earth and absorbs ultraviolet radiation.
- A. 10-50
- B. 50-60
- C. 5-30
- D. 10-80
Explanation: 10-50 km: This option is the correct answer. The ozone layer is a layer of the Earth's atmosphere that extends approximately 10-50 km…
Correct answer: 10-50- A. Ultraviolet
- B. Indigo
- C. Infra-Red
- D. Green
Explanation: Infra-Red: This option is the correct answer. Light rays from the sun, including visible and ultraviolet light, can be absorbed by CO2 in…
Correct answer: Infra-Red- A. CFCs
- B. CO2 and CO
- C. HCL and Oxides of Nitrogen
- D. SO2 and Oxides of Nitrogen
Explanation: SO2 and Oxides of Nitrogen: This option is the correct answer. Sulfur dioxide (SO2) and nitrogen oxides (NOx) are the main gases produced…
Correct answer: SO2 and Oxides of Nitrogen- A. SiO2
- B. CO2
- C. SO3
- D. Al2O3
Explanation: SO3 reacts with rain water to form H2SO4 (sulfuric acid) which is a major source of acid rain.
Correct answer: SO3- A. Cl-Cl
- B. Cl-F
- C. C-Cl
- D. C-F
Explanation: The Cl-F bond is less stronger than the C-Halide bond as it can be broken down by sunlight or UV radiation.
Correct answer: Cl-F- A. Chlorofluorocarbons
- B. Carbon tetrachlorie
- C. Methane
- D. Hydroflorocarbons
Explanation: Factual recall.Chlorofluorocarbons (CFCs) have a significant effect on the ozone layer.
Correct answer: ChlorofluorocarbonsAtmospheric Pollution MCQs: common questions
Are these Atmospheric Pollution MCQs free?
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How many Atmospheric Pollution MCQs are on this page?
There are 36 Atmospheric Pollution MCQs in the Chemistry bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Atmospheric Pollution MCQ have an explanation?
Yes. Each Atmospheric Pollution question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Atmospheric Pollution test?
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