Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 0.002 4.8 1.2 0.2 0.002 4.8 1.2 0.2 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 Of increased diameter With greater number of blades Neither A nor B Both A & B Of increased diameter With greater number of blades Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of silica dust causes a disease called None of these Pneumoconiosis Silicosis Bronchitis None of these Pneumoconiosis Silicosis Bronchitis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of a certain minimum quantity of flourine is desirable in potable water to prevent Dental cavities Scale formation Water-borne disease Corrosion Dental cavities Scale formation Water-borne disease Corrosion ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Operating principle of cyclone separator is based on the action of __________ dust particles. Centrifugal force on Gravitational force on Electrostatic force on Diffusion of Centrifugal force on Gravitational force on Electrostatic force on Diffusion of ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant. Sulphur Calcium Fluorine Phosphorous Sulphur Calcium Fluorine Phosphorous ANSWER DOWNLOAD EXAMIANS APP
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