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 Ferrous sulphate is used in water treatment as a/an Oxidizing agent Coagulant aid Reducing agent Adsorbent Oxidizing agent Coagulant aid Reducing agent Adsorbent ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of baking soda is Sodium nitrate Sodium bicarbonate Sodium chloride Sodium carbonate Sodium nitrate Sodium bicarbonate Sodium chloride Sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The source of energy that causes the least global warming is Petroleum Geothermal energy Coal Natural Gas Petroleum Geothermal energy Coal Natural Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by the pollution of environment by Ozone and Carbon dioxide Carbon monoxide and Carbon dioxide Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide Ozone and Carbon dioxide Carbon monoxide and Carbon dioxide Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogenated wafers Aluminium sulphide Aluminium phosphide Hydrogen sulphide Hydrogenated wafers Aluminium sulphide Aluminium phosphide Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
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