15. Which of the following accumulates from factory waste?
A.Pseudomonas aeruginosa
B.Thiobacillus
C.Pseudomonas putida
D.Zoogloea ramigera

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16. Which of the following can be used for the removal of color from the effluents of pulp mill?
A.Coriolus versicolor entrapped in calcium alginate beads
B.Phanerochaete chrysosporium
C.Both (a) and (b)
D.Nitrosomonas europaen

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17. Which of the following have been used to oxidize ammonia and to prevent algal growth?
A.growth of hypomicrobium in presence of added methanol
B.Micrococcus denitrificans cells encapsulated in liquid membranes
C.Both (a) and (b)
D.Nitrosomonas europaen

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