

MCQOPTIONS
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1. |
If the precipitate formed is soft, loose and slimy, these are __________ and if the precipitate is hard and adhering on the inner wall, it is called _____________ |
A. | Sludges, scale |
B. | Scale, sludges |
C. | Sludges, rodent |
D. | Scale, rodent |
Answer» B. Scale, sludges | |