Environmental Engineering in CE Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. 10-100 100-200 100-1000 10-100 100-200 100-1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of coagulant needed for coagulation of water increases with(i) Increase in turbidity of water(ii) Decrease in turbidity of water(iii) Increase in temperature of water(iv) Decrease in temperature of waterThe correct answer is (i) and (ii) (ii) and (iv) (ii) and (iii) (i)and(iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i)and(iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of Hydrocarbons SO₂ CO₂ CFC (chloro fluoro carbon) Hydrocarbons SO₂ CO₂ CFC (chloro fluoro carbon) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of a certain minimum quantity of flourine is desirable in potable water to prevent Scale formation Water-borne disease Corrosion Dental cavities Scale formation Water-borne disease Corrosion Dental cavities ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Toluene Acetaldehyde Carbon dioxide Carbon disulphide Toluene Acetaldehyde Carbon dioxide Carbon disulphide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ is removed from water by lime-soda process. Foul smell and taste Permanent hardness Iron and manganese Temporary hardness Foul smell and taste Permanent hardness Iron and manganese Temporary hardness ANSWER DOWNLOAD EXAMIANS APP
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