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vironmental
Applications of
Adsorption,
2.4 En Ion Exchange, and Catalysis 55
7. hang A catalyst ces the selectivity of a chemical pr ocess by
(a) altering the thermodynamics
(b) affecting each reaction to a dif ferent e xtent
(c) changing the equilibrium position
g
o
8. In hetereneous catalysis, the catalyst prvides an alternative pathway of lower
o
activation energy gally through ener
(a) weakening the chemical bonds of the reactants on its surf ace
(b) forming an unstable intermediate with the reactants
(c) none of the abo e v
9. espectively, The terms of “catalyst” and “adsorption” wer st time r ir e used for the f by
(a) Keyser and Berzelius
(b) Lowitz and Berzelius
(c) McBain and Ostw ald
10. xc Adsorption and ion ee can be hang
(a) considered as two totally dif ferent processes
(b) described in a mathematically exact manner
(c) grouped together as sorption for a unified treatment in practical applications
11. Catalysis by clays is
(a) possible for temperatures up to 200°C
(b) possible in the hydromethylation of toluene
(c) preferable to catalysis by resins in aqueous systems
12. For decolorizing petroleum fractions by adsorption, you would sugest the use of g
(a) zeolites
(b) alumina
(c) activated carbons

13. In the adsorption pr there is g ocess, ally ener
(a) a risk of bed fires in the OC abatement V
(b) low capital cost
(c) complex installation and maintenance procedure
14. efer Carbon adsorption is prably used in water tr eatment
(a) in the case of removing organics with concentrations around 15,000 mg/L
(b) if materials being remoed are mostly metals v
(c) for removing k etones
15. If we wanted to rVOCs from a gas stream containing moisture using the
emo
ve
adsorption process, we would sugest the use of g
(a) zeolites
(b) activated carbon
(c) a polar adsorbent
16. Ion ehange can be used xc
(a) at high temperatures
(b) without prefiltration of the feed to be treated
(c) for the treatment of nuclear waste solutions