Environmental Engineering in CE High noise level in a chemical plant can be controlled by the Path control of noise Suppression of noise at the source itself Protection of operating personnel All of these Path control of noise Suppression of noise at the source itself Protection of operating personnel All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels. 185 105 135 160 185 105 135 160 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Both A & B Aerobic oxidation Neither A nor B Using the activities of bacteria and other micro organisms Both A & B Aerobic oxidation Neither A nor B Using the activities of bacteria and other micro organisms ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Activated carbon Alum Copper sulphate Bleaching powder Activated carbon Alum Copper sulphate Bleaching powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 1000 50 5000 2000 1000 50 5000 2000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Brown spots in fabrics will be caused by washing with water containing large amount of . Iodine Zinc Bromine Iron Iodine Zinc Bromine Iron ANSWER DOWNLOAD EXAMIANS APP
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