Environmental Engineering in CE Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). 43832 43961 25-30 15-20 43832 43961 25-30 15-20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. 1050 42 332 2 1050 42 332 2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 16 to 20 8 to 12 24 to 32 2 to 4 16 to 20 8 to 12 24 to 32 2 to 4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. 100 3 70 30 100 3 70 30 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. Vapor pressure Biological oxygen demand Dissolved oxygen content All of these Vapor pressure Biological oxygen demand Dissolved oxygen content All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ozone level is generally found to be depleted in India in the month of July December April February July December April February ANSWER DOWNLOAD EXAMIANS APP
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