Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Lime Sodium permanganate Sulphuric acid Copper sulphate Lime Sodium permanganate Sulphuric acid Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The biochemical treatment of sewage effluents is essentially a process of Dehydration Reduction Oxidation Alkalinization Dehydration Reduction Oxidation Alkalinization ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Alkalinity in water is expressed as milligrams per litre in terms of equivalent Calcium hydroxide Calcium carbonate Sodium carbonate Magnesium carbonate Calcium hydroxide Calcium carbonate Sodium carbonate Magnesium carbonate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.Reason R: The sand used in slow sand filters is finer than that in rapid sand filtersSelect your answer based on the coding system given below: Both A and R is true and R is the correct explanation of A Both A and R is true but R is not the correct explanation of A A is true but R is false A is false but R is true Both A and R is true and R is the correct explanation of A Both A and R is true but R is not the correct explanation of A A is true but R is false A is false but R is true ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Standard BOD is measured at 20°C - 1 day 20°C - 5 day 25°C - 3 day 30°C - 5 day 20°C - 1 day 20°C - 5 day 25°C - 3 day 30°C - 5 day ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In lime-soda process Only noncarbonated hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only carbonate hardness is removed Only noncarbonated hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only carbonate hardness is removed ANSWER DOWNLOAD EXAMIANS APP
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