Environmental Engineering in CE CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones. 10¹⁵ 10⁵ 10² 10⁹ 10¹⁵ 10⁵ 10² 10⁹ 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 With greater number of blades Both A & B Of increased diameter Neither A nor B With greater number of blades Both A & B Of increased diameter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace. Hydrocarbon fuel Pulverised coal as fuel Large quantity of excess combustion air Low amount of excess combustion air Hydrocarbon fuel Pulverised coal as fuel Large quantity of excess combustion air Low amount of excess combustion air ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Arsenic pollutant is not generated in____industries. Beverages Glass & ceramic Any of these Tanneries Beverages Glass & ceramic Any of these Tanneries ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Dissolved oxygen content in river water is around __________ ppm. 100 5 500 250 100 5 500 250 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Insufficient washing of sand grains in a rapid sand filter causes Expansion of filtering media Air binding Shrinkage of filtering media Mud balls Expansion of filtering media Air binding Shrinkage of filtering media Mud balls ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS