Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 700 ppm 300 ppm 100 ppm 50 ppm 700 ppm 300 ppm 100 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Photochemical smog is formed from automobile exhaust By reaction of hydrocarbon & nitric oxide in presence of sunlight Appears only on sunny days All of these Is harmful for crops and trees also besides causing eye irritation & asthma By reaction of hydrocarbon & nitric oxide in presence of sunlight Appears only on sunny days All of these Is harmful for crops and trees also besides causing eye irritation & asthma ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 750 1500 20 230 750 1500 20 230 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE World's worst radioactive pollution was caused by nuclear reactor disaster which occured in Moscow (U.S.S.R.) Chernobyl (undivided U.S.S.R.) Arizona (U.S.A.) Pensylvania (U.S.A.) Moscow (U.S.S.R.) Chernobyl (undivided U.S.S.R.) Arizona (U.S.A.) Pensylvania (U.S.A.) 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. 12 4 8 1 12 4 8 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Shouting by a man at his full voice corresponds to a voice level of about __________ decibels. 80 120 50 25 80 120 50 25 ANSWER DOWNLOAD EXAMIANS APP
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