

MCQOPTIONS
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1. |
The stone ware sewers |
A. | are used for carrying sewage and drainage from houses |
B. | are manufactured from clays and shales |
C. | after casting are dried and burnt at temperature 150°C, 700°C and 1200°C |
D. | are generally provided with a water proof cover by vaporising sodium chloride |
Answer» E. | |