The detention period in a septic tank is assumed
A. 20 minutes
B. 25 minutes
C. 30 minutes
D. 40 minutes
Answer: Option C
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Size, capacity and materials need be specified for
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The expected out turn of 12 mm plastering with cement mortar is
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B. 4.0 sq m
C. 6.0 sq m
D. 8.0 sq m
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B. Surface dressing
C. Cutting
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