Environmental Engineering in CE The main type of sludge gas evolved during sewage treatment in Imhoff tank is CH₄ H₂ CO₂ CO CH₄ H₂ CO₂ CO ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about __________ decibels. 120 180 150 90 120 180 150 90 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the Global warming Ionosphere Green house Atmospheric effect Global warming Ionosphere Green house Atmospheric effect ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Aerobic oxidation Neither A nor B Both A & B Using the activities of bacteria and other micro organisms Aerobic oxidation Neither A nor B Both A & B Using the activities of bacteria and other micro organisms ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a source of ozone emission in the atmosphere? Refrigerators Xerox machines High voltage electrical equipments Dermatological photo-therapy equipments Refrigerators Xerox machines High voltage electrical equipments Dermatological photo-therapy equipments 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 8 1 12 4 8 1 12 ANSWER DOWNLOAD EXAMIANS APP
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