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प्रश्न
What are CFCs?
उत्तर
Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. CFC = s react with sunlight in the earth’s stratosphere to break down the protective ozone layer, a layer of gas that shields the earth’s surface from damaging UV-B rays
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संबंधित प्रश्न
How does pollution occur due to vehicles? Give the names of vehicles causing least pollution.
What is air pollution? How does this pollution take place?
Name any two:
Natural sources of atmospheric pollution.
Which is the poisonous gas contained in the exhaust of a petrol driven vehicle?
Air pollution is the contamination of air by pollutants. In this context answer the following:
How does the use of automobiles cause air pollution?
What are the man-made sources of air pollution?
The Hydrochlorofluorocarbons (HCFCs) are the compounds which have the following molecules:
What is SMOG and how it is harmful for us?
The monitoring stations, established by NEERI, have reported that Kolkata and New Delhi have highest ____________ and ____________ in air respectively.
Combustion of fossil fuels generates a lot of air pollution. Can you suggest any two alternative sources of energy which do not cause any pollution?
