51. These propellants usually found in aerosol cans are thought to be harmful to

Question

51. These propellants usually found in aerosol cans are thought to be harmful to the ozone layer. a. Chlorofluorocarbons b. carbonate c. chlorine d. carbonate 52.The form of air pollution that is the gray haze seen in cities is called 53.What is the result when industrial chemicals combine with condensing water vapor? a. Acid rain b. base rain c. greenhouse effect d. global warming 54. Which California City is generally considered to have America's worst air pollution problem? a. Burbank b. San Francisco c. Los Angeles d. Sacramento 55.Which Mexican City is considered to be the world's worst for air pollution? (Two words) 56.What is visible air pollution called? a. Smoglight b. Chemvis Pollution c. Photochemical Smog d. Rainbow Pollution 57.What is the main source of water pollution in unindustrialized nations? a. Carbon dioxide b. Pesticides c. industrial chemicals d. untreated sewage

Explanation / Answer

51) chloro fluoro carbon(CFC).

CFC used as a aerosol propellant in air conditioning and cooling systems.this CFC reach in the atmosphere,and when the ultraviolet radiation incident on it the carbon-chlorine bond break and produces a chlorine atom, then it react with ozon molecule and braking it. this leads to the excess depletion of ozon.

52) smog

the major portion of air pollution comes from automobiles, factories, power plants etc.

smog is a combination of smoke and fog, formed mainly in industrial areas which depends on coal and oil burning and the major pollutants are carbon monoxide hydrocarbon and nitrogen oxides which gives a gray color in the sunlight.

53) Acid rain.

pollutants like sulfur dioxide and nitrogen oxide mix with the water vapour and produce acids, when the precipiatation starts this acidic water reach the soil.

54)Los Angeles

automobiles and industries are the major source of pollusion, and the area suffres both ozon pollusion and partcle pollusion.

55) mexico city.

pollusion by both ozon and other air pollutants

56)smog light.

smog is a combination of smoke and fog which contain nitrogen oxide, sulphur oxide, ozon and smoke. these are emissions from vehicles and industrial areas.

57) untreated sawage

untreated sawages are main source of water borne pathogens and it will destroy the aquatic ecosystem which will affect the human life.

Related Questions

Navigate

• Browse (All)
• Browse 5
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.