Environmental Engineering in CE A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. 6000 to 9000 3000 to 6000 1000 to 2000 10000 to 100000 6000 to 9000 3000 to 6000 1000 to 2000 10000 to 100000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the Relative stability Oxygen ion concentration Bacterial stability factor Biological oxygen demand (BOD) Relative stability Oxygen ion concentration Bacterial stability factor Biological oxygen demand (BOD) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. None of these Ortho-xylene Potassium cyanide Coal ash None of these Ortho-xylene Potassium cyanide Coal ash ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level inside a jet air liner in normal flight is about __________ decibels. 145 80 100 125 145 80 100 125 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent. 4 12 1 8 4 12 1 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the Global warming Green house effect Catalytic conversion Both B and C Global warming Green house effect Catalytic conversion Both B and C ANSWER DOWNLOAD EXAMIANS APP
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