Environmental Engineering in CE Iron & manganese present as pollutant in water can not be removed by Chlorination Oxidation followed by settling & filtration Lime soda process or manganese zeolite process Ion exchange process Chlorination Oxidation followed by settling & filtration Lime soda process or manganese zeolite process Ion exchange process ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh sewage is __________ in nature. Acidic Alkaline Highly acidic Neutral Acidic Alkaline Highly acidic Neutral ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Tri-sodium phosphate is used in boiler water treatment to reduce Caustic embrittlement Turbidity Suspended silica Dissolved oxygen Caustic embrittlement Turbidity Suspended silica Dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell. 0.01 1 4 0.1 0.01 1 4 0.1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The commonest form of iron & manganese found in ground water as pollutant is in the form of their Chlorides Bi-carbonates Sulphides Carbonates Chlorides Bi-carbonates Sulphides Carbonates ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water. Turbidity Color (Hazen) All of these Total solids Turbidity Color (Hazen) All of these Total solids ANSWER DOWNLOAD EXAMIANS APP
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