Environmental Engineering in CE The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel. 10 20 1 5 10 20 1 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of excess flourine in water causes Tooth decay Fluorosis Dental cavity Respiratory disease Tooth decay Fluorosis Dental cavity Respiratory disease ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by None of these Treating in biological oxygen pond Chemical coagulation Chlorination None of these Treating in biological oxygen pond Chemical coagulation Chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ in water stream are deleterious to aquatic life. All of these Suspended solids Soluble and toxic organics Heavy metals and cynides All of these Suspended solids Soluble and toxic organics Heavy metals and cynides ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following acts as a natural source of air pollution? Deforestation Forest fire Volcanic eruption None of these Deforestation Forest fire Volcanic eruption None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. 100-200 10-100 100-1000 100-200 10-100 100-1000 ANSWER DOWNLOAD EXAMIANS APP
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