Environmental Engineering in CE Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect? N₂ CO₂ SO₃ H₂ N₂ CO₂ SO₃ H₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km. 1 15 6.5 0.05 1 15 6.5 0.05 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 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 Both A & B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fluorosis is caused due to the presence of excessive amount of __________ in drinking water. Arsenic Lead Mercury Fluoride Arsenic Lead Mercury Fluoride ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Exposure to small amount of __________ results in high blood pressure & heart disease in human beings. Mercury Cadmium Hydrogen sulphide Asbestos Mercury Cadmium Hydrogen sulphide Asbestos 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. 8 12 4 1 8 12 4 1 ANSWER DOWNLOAD EXAMIANS APP
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