Environmental Engineering in CE Presence of excess flourine in water causes Dental cavity Respiratory disease Tooth decay Fluorosis Dental cavity Respiratory disease Tooth decay Fluorosis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels. 20 60 120 90 20 60 120 90 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Reingleman chart No. 2 corresponds to __________ percent black smoke. 10 40 20 80 10 40 20 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Acute danger to human life (i.e. death) exists, if the concentration of CO₂ in atmospheric air exceeds __________ percent (by volume). 7 3 20 1 7 3 20 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m³.(μg-microgram) 800 90 10 750 800 90 10 750 ANSWER DOWNLOAD EXAMIANS APP
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 10² 10⁵ 10⁹ 10¹⁵ 10² 10⁵ 10⁹ ANSWER DOWNLOAD EXAMIANS APP
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