Environmental Engineering in CE Deaeration of high pressure boiler feed water is done to reduce Caustic embrittlement Foaming from boilers Its silica content Its dissolved oxygen content Caustic embrittlement Foaming from boilers Its silica content Its dissolved oxygen content ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones. 10⁹ 10² 10¹⁵ 10⁵ 10⁹ 10² 10¹⁵ 10⁵ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm. 0.1 0.001 1 5 0.1 0.001 1 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, the detention period allowed for oxidation ponds ranges from __________ weeks. 15 to 20 9 to 10 1 to 2 4 to 5 15 to 20 9 to 10 1 to 2 4 to 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Chlorine Phenol and cynide Alkalis Suspended solids Chlorine Phenol and cynide Alkalis Suspended solids ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water. All of these Biological oxygen demand Dissolved oxygen content Vapor pressure All of these Biological oxygen demand Dissolved oxygen content Vapor pressure ANSWER DOWNLOAD EXAMIANS APP
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