G-12 Chemistry Second Round Second Worksheet 11. Which of the following practices will not come under green chemistry? A. If possible, making use of soap made of vegetable oils instead of using synthetic detergents. B. Using H2O2 for bleaching purpose instead of using chlorine based bleaching agents. C. Using bicycle for travelling small distances instead of using petrol diesel based vehicles. D. Using plastic cans for neatly storing substances. 12. Nitrogen and oxygen are main constituents of air but these do not react with eac other to form oxides of nitrogen because A. The reaction is endothermic and requires very high temperature. B. The reaction can be initiated only in presence of a catalyst. C. Oxides of nitrogen are unstable. D. N2 and O2 are unreactive. 13. The largest reservoir of nitrogen in our planet is: A. Ocean B. Biosphere C. Atmosphere D. Fossil fuels​