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1.4 En of Adsorption vironmental Applications 29

2. Nitrogen Oxides are involved in
(a) photochemical smog
(b) acid rain formation
(c) greenhouse ef fect
(d) all of the abo v e

3. N O participates in 2
(a) greenhouse effect and ozone depletion
(b) greenhouse ef fect
(c) ozone depletion
(d) photochemical smog
4. Comparing pollution from primary pollutants and secondary pollutants,
(a) primary pollutants are generally easier to treat
(b) secondary pollutants are generally easier to treat
(c) it depends on the case
(d) both kinds of pollution are equally dificult to treat f
5. During combustion NO x om may come fr
(a) nitrogen in fuels
(b) nitrogen in the atmosphere
(c) both of the abo v e
(d) none of the abo v e

6. Generally, you would connect Athens and London, respectively, to which of the follow-
ing types of air pollution:
(a) photochemical smog and winter-type smog
(b) winter-type smog and photochemical smog
(c) winter-type smog and winter-type smog
(d) photochemical smog and photochemical smog

7. The main consumer of fresh water in Eur ope is
(a) the public
(b) agriculture
(c) industry
(d) energy sector
8. Nitrates and phosphorus
(a) are among inorganic pollutants
(b) cause eutrophication
(c) are persistent pollutants
(d) are accumulated in the food chain
9. Eutrophication is mainly attributed to
(a) agriculture
(b) organic industry
ineries (c) ref
(d) metal industry