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beaches411 beaches411
wrote...
Posts: 791
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6 years ago
Which cement will cobweb if the working time has expired?
 a. ZOE
  b. Resin
  c. Polycarboxylate
  d. Zinc phosphate
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wrote...
6 years ago
c
RATIONALE: Polycarboxylate cement will cobweb if the working time has expired.
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