E. ANSWER THE FOLLOWING QUESTIONS :
1. Name two gases used for advertising signboards.
2. Where do water particles condense in atmosphere
3. Give harmful effects of carbon monoxide
4. How does nitrogen control the rapid oxidation ?
5. Name two sources which release chlorofluorocarbons.
6. Give the significance of nitrogen.
7. Why neon is used in advertising glow tubes ?
8. How can carbon dioxide be removed from air ?
9. Why atmospheric nitrogen is heavier than chemical nitrogen?
10. Why is world famous monument TAJ MAHAL' turning yellow?
11. Give two ways in which nitrogen is added to air.
12. What is air pollution ? Name four air pollutants.
13. Give any two methods to control air pollution.
14. Chemically explain the cause of acid rain.
15. Show how can you prove that air is a mixture and not a compound?
Answers
Answer:
1.neon and argon are common.
2.it condenses in air with mixing with the dust,salt and smoke of atmosphere
3.breathing CO cn cause haedache,nausea and diziness.it also leads to heart disease.
4.nitrogen is atemprture refucing dilutnt, nitrogen reduces combustion efficiency
5.refrigerants and aerosols
6.nitrogen is a naturally occuring element.its essential for growth and reproduction.its found in proteins and nuclic acids.
7.because it lights quickly.
8.by using air capture sucks we cn remove co2 from air.
9.atmospheric nitrogen have some N 15 isotope caused by cosmic rays.
10.due to pollution from the sorrounding city of agra.
11.by combystion of fossil fuels and adding nitrogen contining fertilizer to agriculture.
12.its the mixture of solid particles and gases into air.
13.fabric filters and cyclone separators.
14. SO2+ 1/2O2+H2O = h2so4
similarly 2NO2+1/2O2+H2O = 2HNO3
15.after hydrogen and oxygen the rest of the air components are nit in a proper ratio.so its amixture.