Tag: causes of resource depletion
Questions Related to causes of resource depletion
Chlorofluorocarbons cause
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Global warming
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Eutrophication of lakes
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Depletion of the ozone layer
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Magnification in the food chain
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Acid rain
Which of the following is the result of use of chlorofluorocarbons?
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Global warming
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Eutrophication of lates
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Depletion of the ozone layer
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Magnification in the food chain
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Acid rain
A chlorofluorocarbon (CFC) is composed of carbon, chlorine, and fluorine. This is used in refrigerants, propellants, and solvents. The chlorine atoms are released due to splitting of CFC by ultravoilet radiation.
Ozone in the stratosphere is depleted by
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$C _6F _6Cl _6$
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$C _7F _{16}$
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$CF _2Cl _2$
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$C _6F _6$
The presence of CFCs in the atmosphere results in the depletion of the ozone layer. The chemical formula of this substance is CF$ _2$Cl$ _2$. They are used as coolants in refrigerators, coolers, etc. The CFCs causes the breaking of the ozone molecule which forms the oxygen radical and O$ _2$. The depletion of the ozone layer results in the penetration of the harmful UV radiations from the sun into the Earth's atmosphere.
Good ozone is found in
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Atmosphere
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Biosphere
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Stratosphere
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Ozonosphere
The correct answer is Stratosphere. Option C
Which one of the following chemicals is responsible for the reduction of ozone content of atmosphere?
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Hydrochloric acid
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Photochemical smog
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Chlorofluorocarbon (CFC)
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Sulphur dioxide
Chlorofluorocarbons or Chlorofluoromethane are also known as freon or aerosols. They are chemicals used as refrigerants, propellants and solid plastic foams. These chemicals are also released as aerosols by jets flying at high altitudes. Along with nitrogen oxides, chlorofluorocarbons react with ozone of ozonosphere and depletes the same. Chlorofluorocarbons release reactive chloride which directly reacts with ozone molecules setting a chain reaction.
Which one of the following gases can deplete ozone layer in the upper atmosphere?
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Ammonia
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Methane
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Carbon monoxide
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None of the above
Which one of the following diseases is caused due to ozone depletion on human?
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Huntington's chorea
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Small pox
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Plague
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Erythemia
- Due to the ozone depletion, the UV rays are filtered in the Earth's atmosphere.
- This ray results in the development of various diseases. One of the common disorder is erythema.
- This is a disease in which there are reddening and swelling of the skin. There is swelling of the mucous membranes.
- There is an increase in the blood flow from the peripheral capillaries which results in inflammation.
- Thus, the correct answer is option D.
The Pollutant responsible for Ozone depletion is
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$CFCs$
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$MIC$
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$CO _2$
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$SO _2$
Which type of electron is present in free radical?
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Unpaired and extremely reactive
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Paired and extremely inactive
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Unpaired and extremely inactive
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Paired and extremely reactive
Free radicals have unpaired electrons. These are extremely reactive. As one chlorine free radical can remove 11000 ozone molecules from stratosphere.
Pollutant likely to deplete ozone layer is?
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CO
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Nitrogen oxides
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Chlorofluorocarbons
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Both B and C
- Nitrous oxide is stable at ground level and breaks down when it reaches the stratosphere to form nitrogen oxides, that trigger ozone-destruction.
- The main cause of ozone depletion are halocarbon refrigerants, such as chlorofluorocarbons (CFCs), HCFCs, halons).
- So, the correct option is 'Both B and C'.