91. The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is
92. Lead caulked joints are used for laying
93. Large diameter sewers subjected to external pressure alone, are reinforced
94. The presence of free ammonia in sewage, is detected by
95. The rational formula for peak drainage discharge, was evolved by
96. In sewers designed with self cleansing velocity,
97. The sewer that unloads the sewage at the point of treatment is called
98. In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is
99. Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for
100. A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is
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