Chemistry Mercury is emitted into air by Steam engine Burning coal Coal fire Burning garbage Steam engine Burning coal Coal fire Burning garbage ANSWER DOWNLOAD EXAMIANS APP
Chemistry Pollutant from motor car exhaust that causes mental disease is NO2 Hg SO2 Lead NO2 Hg SO2 Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of baking soda is Sodium bicarbonate Sodium chloride Sodium carbonate Sodium nitrate Sodium bicarbonate Sodium chloride Sodium carbonate Sodium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of atomic structure discovery of elements periodic table of contents metallurgy atomic structure discovery of elements periodic table of contents metallurgy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrochemical change Electrical change Physical change None of these Electrochemical change Electrical change Physical change None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Concentration of a material which is lethal to 50% animal is called LD50 ADI LC50 NOAEL LD50 ADI LC50 NOAEL ANSWER DOWNLOAD EXAMIANS APP
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