Environmental Engineering in CE The progressive warming up of the earth's surface is mainly due to the Thickening of ozone layer Automobile exhaust De-forestation Blanketing effect of CO₂ in the atmosphere Thickening of ozone layer Automobile exhaust De-forestation Blanketing effect of CO₂ in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. Carbon dioxide Hydrogen None of these Ozone Carbon dioxide Hydrogen None of these Ozone ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sulphur dioxide present in the industrial chimney exhaust gases causes Reduction in plant's productivity owing to acid rain Respiratory & lung disease All of these Corrosion of building materials Reduction in plant's productivity owing to acid rain Respiratory & lung disease All of these Corrosion of building materials ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. 1000 500 50 3000 (i.e. 0.3%) 1000 500 50 3000 (i.e. 0.3%) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Alkalis Chlorine Phenol and cynide Suspended solids Alkalis Chlorine Phenol and cynide Suspended solids ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Exposure to SO₂ containing chimney gases results in the Increased drying & hardening time of paints All of these Acceleration of corrosion rates of metals Reduction in strength of leather & cloth Increased drying & hardening time of paints All of these Acceleration of corrosion rates of metals Reduction in strength of leather & cloth ANSWER DOWNLOAD EXAMIANS APP
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