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 90 120 60 105 90 120 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The progressive warming up of the earth's surface is mainly due to the De-forestation Thickening of ozone layer Automobile exhaust Blanketing effect of CO₂ in the atmosphere De-forestation Thickening of ozone layer Automobile exhaust Blanketing effect of CO₂ in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the Vegetation Rain Green house effect Forestation Vegetation Rain Green house effect Forestation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Copper sulphate Activated carbon Bleaching powder Alum Copper sulphate Activated carbon Bleaching powder Alum 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
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Chlorine Alkalis Suspended solids Phenol and cynide Chlorine Alkalis Suspended solids Phenol and cynide ANSWER DOWNLOAD EXAMIANS APP
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