Environmental Engineering in CE Presence of a certain minimum quantity of flourine is desirable in potable water to prevent Scale formation Corrosion Water-borne disease Dental cavities Scale formation Corrosion Water-borne disease Dental cavities ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent. 1 4 12 8 1 4 12 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Polluted water having low BOD are most economically treated in Sludge digester Oxidation ponds Clarifier Sedimentation tanks Sludge digester Oxidation ponds Clarifier Sedimentation tanks ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most widely used coagulant for the treatment of turbid water? Lime Ferric chloride Sodium aluminate Alum (aluminium sulphate) Lime Ferric chloride Sodium aluminate Alum (aluminium sulphate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Reingleman chart No. 2 corresponds to __________ percent black smoke. 20 10 40 80 20 10 40 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a source of ozone emission in the atmosphere? Dermatological photo-therapy equipments Refrigerators High voltage electrical equipments Xerox machines Dermatological photo-therapy equipments Refrigerators High voltage electrical equipments Xerox machines ANSWER DOWNLOAD EXAMIANS APP
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