Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Both A & B Using the activities of bacteria and other micro organisms Neither A nor B Aerobic oxidation Both A & B Using the activities of bacteria and other micro organisms Neither A nor B Aerobic oxidation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure Both (i) and (iii) Both (i) and (ii) Only (i) All (i), (ii) and (iii) Both (i) and (iii) Both (i) and (ii) Only (i) All (i), (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using None of these Lagging of noisy duct Mufflers (silencers) Accoustical absorbent None of these Lagging of noisy duct Mufflers (silencers) Accoustical absorbent ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan Both A & B Neither A nor B Of increased diameter With greater number of blades Both A & B Neither A nor B Of increased diameter With greater number of blades ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels. 60 105 120 90 60 105 120 90 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Industrial workers working in leather tanning & manufacturing units are prone to suffer from Respirtory ailments (e.g. bronchitis) Blurred vision Skin diseases (e.g. dermatities) Silicosis Respirtory ailments (e.g. bronchitis) Blurred vision Skin diseases (e.g. dermatities) Silicosis ANSWER DOWNLOAD EXAMIANS APP
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