Environmental Engineering in CE Infective bacteria in water is killed by the __________ process. Aeration None of these Sterilisation Disinfection Aeration None of these Sterilisation Disinfection ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the Biological oxygen demand (BOD) Relative stability Oxygen ion concentration Bacterial stability factor Biological oxygen demand (BOD) Relative stability Oxygen ion concentration Bacterial stability factor ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Septic tank is a(i) Settling tank(ii) Digestion tank(iii) Aeration tank Only (i) Only (iii) (i) and (ii) (i) and (iii) Only (i) Only (iii) (i) and (ii) (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m³.(μg-microgram) 10 90 750 800 10 90 750 800 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? Benzene hexachloride Chlorine Alkyl benzene sulphonate (ABS) Alkalis Benzene hexachloride Chlorine Alkyl benzene sulphonate (ABS) Alkalis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Salt content in sea water is about __________ percent. 3.5 0.5 10 1 3.5 0.5 10 1 ANSWER DOWNLOAD EXAMIANS APP
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