Chemistry Which of the following is secondary air pollutant ? SO2 Photochemical smog NO2 Dust particles SO2 Photochemical smog NO2 Dust particles ANSWER DOWNLOAD EXAMIANS APP
Chemistry What particles move around the nucleus of an atom and are negatively charged? Positrons Electrons Neutrons Protons Positrons Electrons Neutrons Protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals occurs in free state ? Lead Zinc Copper Iron Lead Zinc Copper Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of ‘Common salt’ is Sodium chloride Ammonium chloride Calcium chloride Sodium nitrate Sodium chloride Ammonium chloride Calcium chloride Sodium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chile saltpeter is the common name of: Potassium nitrite Potassium nitrate Sodium nitrite Sodium nitrate Potassium nitrite Potassium nitrate Sodium nitrite Sodium nitrate ANSWER DOWNLOAD EXAMIANS APP
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