Chemistry When Hydrogen starts burning in air, it produces ? Methane Ammonia Water Carbonic Acid Methane Ammonia Water Carbonic Acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Elimination reaction Addition reaction Substitution reaction None of the options Elimination reaction Addition reaction Substitution reaction None of the options ANSWER DOWNLOAD EXAMIANS APP
Chemistry The common name of sodium bicarbonate is Soda ash Baking powder Soda lime Baking soda Soda ash Baking powder Soda lime Baking soda ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is used in gas balloons instead of hydrogen gas because it is More stable Non-combustible More abundant than hydrogen Lighter than hydrogen More stable Non-combustible More abundant than hydrogen Lighter than hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry High concentration hydrocarbon pollutants in atmospheric air causes Cancer Respiratory diseases (e.g.asthma) Reduced crop yield Silicosis Cancer Respiratory diseases (e.g.asthma) Reduced crop yield Silicosis ANSWER DOWNLOAD EXAMIANS APP
Chemistry The pollutant responsible for ozone holes is ________ CFC CO SO2 CO2 CFC CO SO2 CO2 ANSWER DOWNLOAD EXAMIANS APP
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