Environmental Engineering in CE Insufficient washing of sand grains in a rapid sand filter causes Mud balls Air binding Shrinkage of filtering media Expansion of filtering media Mud balls Air binding Shrinkage of filtering media Expansion of filtering media ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. May increase or decrease ; depends on the chemical characteristics of polluted water Decreases Increases Remains constant May increase or decrease ; depends on the chemical characteristics of polluted water Decreases Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 2000 50 1000 5000 2000 50 1000 5000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming All are correct (i) and (ii) Only (i) (i) and (iii) All are correct (i) and (ii) Only (i) (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of a certain minimum quantity of flourine is desirable in potable water to prevent Water-borne disease Corrosion Scale formation Dental cavities Water-borne disease Corrosion Scale formation Dental cavities ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell. 4 0.1 0.01 1 4 0.1 0.01 1 ANSWER DOWNLOAD EXAMIANS APP
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