Environmental Engineering in CE Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal In clarifiers In sedimentation tanks equipped with mechanical scrapper In vacuum filter By chemical coagulation In clarifiers In sedimentation tanks equipped with mechanical scrapper In vacuum filter By chemical coagulation 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 Chlorination Treating in biological oxygen pond Chemical coagulation None of these Chlorination Treating in biological oxygen pond Chemical coagulation None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. 35 75 95 105 35 75 95 105 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The Killer gas which caused Bhopal gas tragedy in 1984 was Methyl iso-cynate (MIC) Sulphur dioxide Carbon monoxide Phosgene Methyl iso-cynate (MIC) Sulphur dioxide Carbon monoxide Phosgene ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Infective bacteria in water is killed by the __________ process. Aeration Disinfection None of these Sterilisation Aeration Disinfection None of these Sterilisation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 6.5 to 8 1 to 1.5 4 to 5 13 to 14 6.5 to 8 1 to 1.5 4 to 5 13 to 14 ANSWER DOWNLOAD EXAMIANS APP
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