

MCQOPTIONS
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1. |
*/*_Septic tank is a (i) Settling tank (ii) Digestion tank (iii) Aeration tank? |
A. | Only (i) |
B. | (i) and (ii) |
C. | (i) and (iii) |
D. | Only (iii) |
Answer» C. (i) and (iii) | |