Environmental Engineering Alkalinity in water is expressed as milligrams per litre in terms of equivalent Calcium carbonate Sodium carbonate Calcium hydroxide Magnesium carbonate Calcium carbonate Sodium carbonate Calcium hydroxide Magnesium carbonate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 0.4 to 1.0 2 to 4 5 to 7 0.2 to 0.4 0.4 to 1.0 2 to 4 5 to 7 0.2 to 0.4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum permissible limit for fluoride in drinking water is 1.5 mg/liter 5 mg/liter 0.1 mg/liter 10 mg/liter 1.5 mg/liter 5 mg/liter 0.1 mg/liter 10 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to geometrical increase method of forecasting population, arithmetical increase method gives Accurate value Same value Higher value Lesser value Accurate value Same value Higher value Lesser value ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following sewers is preferred for combined system of sewage? Egg shaped sewer Rectangular sewer Circular sewer None of these Egg shaped sewer Rectangular sewer Circular sewer None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Standard BOD is measured at 20°C - 1 day 20°C - 5 day 30°C - 5 day 25°C - 3 day 20°C - 1 day 20°C - 5 day 30°C - 5 day 25°C - 3 day ANSWER DOWNLOAD EXAMIANS APP
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