Chemistry The pollutant responsible for ozone holes is ________ CFC CO SO2 CO2 CFC CO SO2 CO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Radium Tritium Phosphorus-31 Carbon-14 Radium Tritium Phosphorus-31 Carbon-14 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Water can be separated from alcohol water mixture by Evaporation Decantation Sublimation Distillation Evaporation Decantation Sublimation Distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iodex, a pain relief balm, has the smell of ________ . Propyl salicylate Butyl salicylate Ethyl salicylate Methyl salicylate Propyl salicylate Butyl salicylate Ethyl salicylate Methyl salicylate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The BOD values of water indicate the Amount of ozone used for biochemical oxidation Amount of organic debris Amount of oxygen used for biochemical reduction Amount of oxygen used for biochemical oxidation Amount of ozone used for biochemical oxidation Amount of organic debris Amount of oxygen used for biochemical reduction Amount of oxygen used for biochemical oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called Smog None of these Green house effect Eutrophication Smog None of these Green house effect Eutrophication ANSWER DOWNLOAD EXAMIANS APP
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